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 0xcec5abb99cce42402582ef563d9122bb7da5ea5bf050b6ee01338f5422bd030f. 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/ff238743-cc57-4bf5-8bb1-3742f3546318.json and https://artists.proofprofile.net/proofs/artist/ff238743-cc57-4bf5-8bb1-3742f3546318.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 0x7e7f434257ac112897a2bd3cfd6ba2fd730486f2fca9869bd9ef5b9392da14f8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GBSV81800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73449c105770ab42419676bdaea885f209eacd1984f5ba5d804c616afa1d68b7. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBSV81900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbda6a43fb897e238333cfdff74c041b7606b0159a63017b8928034c3be46480. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBSV81900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73a9bf0eabd77157f26a87c61e648928f8c3d279754e0100e730a96f5479e43. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBSV81900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73449c105770ab42419676bdaea885f209eacd1984f5ba5d804c616afa1d68b7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBSV81900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ce98b743ebae27b194d9e5427033e3e4616833fe4837181825d154157c8866. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBSV81900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79235647a571dc916a052a585889ce152c18b00ca1a02eebf5fd0a4a827e62a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBSV81900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8629e0176b541bfd28a8a9961c510012dfb9790f3e6724eaa8bd9db9f10a2e44. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QMBZ91910281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0110cbf261b3cc77903b5b1c368a434dfe038f881bd9926d15d35234b4338f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QMBZ91943684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0910f0461a73b6e7fb0fb998d09969fad2ee7e23952739212baad8de3698eaf9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMBZ91943694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e232d6b6c4e8f4cc084500401a4832f8aa3d15d61c03d96585e56743bfc4a6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QM6MZ2153745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe801dfc6000b3a95ffebd81928a4433d574ef8c09479a611d7e1b9b23b57365a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFME2134268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bb29da938c8b8186a083a5aa94d3c37e30d19780cd819cba05c044fd9e15eb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBX722200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e042a5c8f7dbd794ce8e0351018c3a67d7708446f3c8cf47e782cc8eee738de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBX722300354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8a52bcf946fe4948a00a96e9ecd7e4842583ddf26403e29754e529b4c1e12c. 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/GBX722300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b77e41a07ca875430da267f15830916f49d9b4313eb0b6b853871634bfccae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBX722200588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bb29da938c8b8186a083a5aa94d3c37e30d19780cd819cba05c044fd9e15eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBX722200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ab4e3ae4239ac19207ff5ec0a16ea1881827a88adeda6ab60e5f57398116a8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBX722300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e8aaee62339dbd667b73d41aceec23432db1ca2be7db267780434e516443e7. 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/GBX722200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e75b122fdc7070d870c983def7412b57e3c42180f7060e785f3566753c05f6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBX722300356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a77e9979ad4825c28e48c62729c19642b34619871b5e6f6bc4c80e9d83511a7. 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/GBX722300357.
Rocks (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b32519cb2aea7fa6a1470a8540f66bbd10b62943beeebde2096be282b94cb1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ91943718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65037093dd642c999da2d16434866161f0c2f6b164e90941a9a774a24fce7e63. 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/QM6MZ1810183.
Done Talkin' (Toddla T Steeze Factory Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c0d38d93346b7f577d4f5be56399462375ace129308f7573a4ac2143febfbc. 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/QZW9M2248965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe205dc3b141a4feeb1ae65b334b1bf23d5c1d8b0fa3cbf0ae24821cd0b7f45. 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/QZNJY2236444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b316a94f58acf529b037f1d0b5b1e42907a1d526023b453a2a46add0140175a. 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/QM4TW2399586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3a84c08a97c7e7192081733a6966584c15e61eebc0f5a29de745443a52dfa8. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBLFP2042028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3a84c08a97c7e7192081733a6966584c15e61eebc0f5a29de745443a52dfa8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBLFP2042028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a1a35361c2d4e1f5a8adc6bb392df3fde3f6c0d1ec7e632f80c7ff292394fa. 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/FRS712000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8858a2665e7f6c679a0a927f562b9855e718a3bdee243771272ca96a619e00. 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/UKQNV2100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f4792f56df1de441854a4eb0a0de1f86c822024892277f69f2d172ceccea3c. 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/UKQNV2000228.