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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c30ffc2a14559fb8d1982958e983e0a69f8a591c60ed2f00f8805d415b1b96d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8135ebb-898c-417c-a0a3-731ec1c999df.json and https://artists.proofprofile.net/proofs/artist/d8135ebb-898c-417c-a0a3-731ec1c999df.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8230c217238f2a212456dde005cb48258f68ae4087f3f643ab2af8f8723b8057. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:50Z), 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/GBSMU2936198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19652fd6d3ad3e557677a8c7ede068ad4b08feed935ef5c33a787ec3140f7b95. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBSMU2936199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8cd13ecf5d2355a34baaae188ef2a911151a890f8f01d6745e5be186a54e4c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBSMU2816873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261285adde4d3f9a60d0ced7799536a4fd8636b01c4af2077675a6703e0109c8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:49:53Z), 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/GBSMU2816874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeb2c8a85f791924f0727e37b3a50514bce8a8c94d6535c788b6170c8d24cc4. 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/GBSMU2816875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40f4284add5be8e18f4de3b3fde5451b2e21fe2ab8d54f47d4e9036ad2f150e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBSMU2816876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7bbeb9de1c0f3c1111ad71dd90c5487371771cde610aa0831ae16c49661780. 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/GBSMU5670731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0b7875174098dc1ec58d7119088536cecae4c03c92b99e047af6aca642d02f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:46:09Z), 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/GBSMU5670732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b288cb4d9ac08f034ecc5b109e71221e55098fb3c4e151dc73a28eddcc7b01. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:00:38Z), 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/GBSMU5670733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25d69dab39367beea1aeda75b3dfde8a392bdd8ba56956bb7193af53ff3452a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU5670734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b295bb502de5026b18215bc3bd1965ddb6ebd424426a49056209b19047167d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBSMU5642562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063147950ae0413e818f37197abe41260b25cae97a5818ba9f8f08716498e5bc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU5642564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dd0431643675dab710de57650ad2fd979abaa71b04d94adc668037a28e475f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:17Z), 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/GBSMU5642565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd131804ff0a98250171f081233c4abc9255882b60b119134dd21d5cb0c8fa165. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:52:54Z), 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/GBSMU6309835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe745078119b7b905076015ad1619a71e59d61da3262bd6e55578577334e0ac. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/GBSMU6309836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940dfc313c30d2173e811bc40eef02ecbe0bfb07e6f3f18761dced8a916573c2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU6309837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b6771d96be940dec7cf60725c8b2f6fe62df135038eef4dfbcad5c5b9f3918. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:34:55Z), 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/GBSMU6309839.
Medley: Europe is living a celebration / Lalala / Dile que la quiero / La venda / Estando contigo / Dime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01357a6724a135222efabafb279adc5160a3314afcbf9356633d92a9490c1cc. 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/GBSMU8638683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b66323c0ff06cdf72bfa0ed6bf3f4548f706a80642f768be10d0e06de6ae52d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GX3HH2211086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1748e711664a67b83343c00b31011d6e5d978b1f288a4b563fc2d78db254d069. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:17Z), 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/ES31E2204564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf049d2f19e29b911f3358b96725a593768dd619e77b0c4aa1240756ac6a64c4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES31E2301884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1fe206a7be21d72ca46131431c5fa104c535580e2c9a207e94fdc049b8869. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES31E2301885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3825abc267144082f9108fbd27be8baa2b3c868e5068177515643eea357b66a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ES31E2301952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afe0d5d17d4dd97d18bc20330e4ce937e3ffce2fde4837bb2a4563f2d0590b2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES31E2302179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6a19eea8883c8fdbe3bd0455ee65ae01b2222f9b3eb1a87a6394533cdb3b41. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES31E2302202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb68175f54f773169221183e3c381da2b3bf46b3aee5e45f0a7aaf4f8e1a7a49. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/ES31E2404255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b4610b9034c1a2e952728fb8e9df18a16abe352410f4d45cb8ab1e10281f9c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES31E2407230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c3765da65076937032a59bd5aaa431c23307e053050bfac88458b28043150f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES31E2405957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc0a73d337dcfeb702175b6a6abc32462c109cdba1df9e9e4c8fb422f734e53. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:04:36Z), 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/ES31E2407231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7097378e7216810de97abcdcad65ee7504fd990488dd39664af5246870f3dd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES31E2405644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327d1e100e32e8e50d531dfacea49a3f1a5720634493c7d1d4a306f276cb3017. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES31E2407232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d781f2bec122ce487a8e6ba12d8c038570cefc2c0a703dab43bba25eeec46b7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES31E2500264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d781f2bec122ce487a8e6ba12d8c038570cefc2c0a703dab43bba25eeec46b7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES31E2500264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dfe40156276cf72cdc3f81fbdacf0c35aea4bebedcb88944192e68a23ee364. 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/ES31E2500296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752d8552b9147b3c16c9dd00b19495d4de1cf4d35118d19bd0ed69d1179142d3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES31E2500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5059b8aabec366cc5244f78aee211305b578b51ff7d8346e2ca93e58203aa054. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ES31E2500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808443e7361b895a6862e22d840d2c10f92122e3e663ab895c8dacb12c92b3fa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES31E2500308.