1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bd3494b546ed7408ee43bc2020d1069962b214b85870a5e26e66da944c25cc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31d930bf-9e42-448f-9636-5d9c54481f51.json and https://artists.proofprofile.net/proofs/artist/31d930bf-9e42-448f-9636-5d9c54481f51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4681a1a51b5f41ed96fed63f3b63daddfedd085efb338f0fe966231ddd4b0a90. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7ef285f88e8b15cf47f523e62cfca4d25c2932386100cafbb093a4bfbeb3cb. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7efd9013199adc225c71a76c12dac009c80e89d1e37679e598e6380fa9051b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae68eabd58ccfbe0d7f51b6f478f51ffe6e2237ad4d8ab5e0a437e234fa93a4a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab20a82a25638cdcdb814a9c9d4cc46f2db288365409adeb30a889d746ff0a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40b83a3d8e7e6e6fc663c8a7ada52a3a8d731dbcd462c137c4d4f68a892ce3e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6763863576f79d1ec8c0c438f894ead59b37e49cb852a2d56190bfc7f80ffcc5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bc57538e05ba9fa9af07834e3dba81369ddb3a8467da14e0bb8e2cd37e6890. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b85c8c64dff563c0f16c1f09611ed3b54028c4d260753aa6d13ba67397a768d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd393308cf8159b81f95a5e68b4dad56e5bc093059c9764c51029d5ce47581123. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e42667e2e9eb0b77e2980479e2054c6afc52f389330728545e5586cbf497f4a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754617a8b51796e3ce404b7c57c81546fd575bef9dae2a45310c3a6711addc49. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c63d91e57618154df1ed3649e38e5809c630294563e6824b1946c6996eed92. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2b3e364a01fa8101751ca71d0fb3ee9a903f42e097f0d77fb4dd53fefd5c15. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacaf3ea8688dc1c90435a11f14375ec955c9c24decc255c1bf541657c7c203d. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367db48e7d2403cdbe78b31cb4f778ed59fb5dc4f56e4f8ed6bc440d781da193. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983dadd8c5634bb66b071407d5156ba80644e7db952c11200c0538a2d8885310. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc777b4290d0e5e693b0880988b4fb370098ca99fb35621a8b068ea6265ade8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e93b33cd3b7befc86aec77381763f177376e6a98f0dc41e0869985cf9b4cb9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8166a67aeb5466ca10d6987095f33d4e413ff70f6563a49e51d5720049198f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54f297abea06d5efb5b89f41699cff07c719c4ed9b913afd2abdf302311f98d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23896595d4d8664f07844faedce2a609ec737474d046daf407762ef9d512b9fb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dda9cd9457edf316eb53c811625bbdb7411671f0476cc411972f0b9ac4fb05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9e77e1507e16eb5df8de5911bca495abbd6976f1dc60c6c9cc935eb127c449. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8015f161cbaaa9d031d9c30312a60c4b7611f186056c7f10b41e3bb0fcc6655a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf858c971a286ad73a33ec4dd20c5297a69283f68575c323c70880eefa5756b62. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a2a39fbb220db50c0ff4d79ff2924a34d22824dce16a5cb6e0d833b51facb0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a097ba6786d074a1464bc3e271a32d6fad4781dfa8784ad1c5c39e9a227de6e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f14bda99d98c28f965c518054cd1d9905e20c55577ca613ddaf262288bce750. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70f76a7bc09383fc91fd6aa96fcff35adb2c0b88182b37aa667138d1f66edad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6632b326833ea321a018f897b9cc6732462a4f298ad869e58c13fdba58cf98c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d92fa4c9ed1dbfbed16e67763bf2910cb184fb37ca32dc18f620459f97a751. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4ad4e5777a8dfad60b75daa85f3bacbe0b464a33072893eee908971e25af10. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfd2ff151c5399bd46e5751a536967f6a1e6193cf7b92a0a3f2654799df3a22. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693f3e3ee76b44bec341c5700fd1d1566afb1967ca16b092d72953925cf2281. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f1f15c7642ead73787f91d1c07ee7bcdb84e66d462ad8eec4c4c9e07a77678. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ca7e206011fd4e431d4c89896a1e6991c9711af1a9097a7f33bfc91faaf33. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93329385d07fc0999517f56f7373be7568eee6f1fd9570c1f5209f269a5980b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317dfa99af72bc939d391c0181d02b828f6119d1082d5bbfd6c4de574e831a81. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4811d29d0fd9067ac9a5877df2c097e457f4f8d7b3c9f7f7d798f0af906e1735. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART340900381.
Quejas De Bandoneon (El Barrio De Tango Vol. 5 1944 - 1945)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0331fe72de347940f1c531b6b0420da2a67e378ab4332aeb1989205e9d9094e9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f038c1e175fe442a594edfc42a9649835203c14bb6f19724e59d5b97334a3f9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe803822fa0b19a404a2d93e36109ff0f105474a41ca04a5588cf845dd28054db. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ca7990a33d19f64e81bd50107f545731156ed6811c53329a203653c19759d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9dfbad5e679ff0a8d4f656759125d45ec77a27613901097d57546ec27fc70f. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbba61324f79803e428302e47b4384c55b3d7593467919075ce4c12f00deb1e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6469f15773284ca7272ce3ab2fb566214bbf302fe9f3c63a5c2477ea29d0b141. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329512698160177b5fd05b6d96e561463789c5aed40b0232d45da35c05b20258. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f2f33f505fada1368bf681048c224abd53bbac06eb459295203c92bae5eb8e. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51c8f7cd7553d2a05667020eb9bf112e4e1d93ff8c73ebc6941397d85374066. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478d7326a89de945001a18520f9ba4af5fd0e3fb901bd5201bc11dfa757b7593. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495c5f7596eedc0b599584e624f273f494f188ef520ec1c2dcee7becf66c090f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61256791.
Cafetín de Buenos Aires (El Barrio de Tango, Vol. 9: 1947-1949)
Poetas del Tango - Enrique Santos Discépolo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124f513d89dab6540ab29b9e6aa6e5bfa001517da352e0b8f17e80a25de400e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA561201916.
Antología Noble Del Tango: Sus Grandes Intérpretes Y Compositores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c856442770f4bd5e0f68842e0fb8751e184b9c9cb5fd9d54121e40dd7ccee5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USR010612461.