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 0x8ee96beda9af158222eb42fa1aa9d659f026d166460cc183f4ed21e562007461. 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/3df9a5e4-0b4d-4bbc-b493-d783fcb846a1.json and https://artists.proofprofile.net/proofs/artist/3df9a5e4-0b4d-4bbc-b493-d783fcb846a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xde54dea978f6895107bc8ee2590f5b78e07588badce1db0b8ffb0316f19aa613. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/TCADT1857911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1802f8b72d318aa2dae9cf9282d065bb8736100a155954165901790696a55bc1. 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/UYB262400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bf808646b9e4613052e289257ceca8807cd5536e5791be502f6683f1456681. 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/UYB262400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aed2e0d535672221d5a4c07fd4840e1c81e01330859a322a6a74e716147734. 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/ES5952106585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20537e88664b6f95fa7ba7c6d187cb1e35077d5560ea5ca7a334856470e4c2f. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/UYM121500454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d309bedc0ab5374ef68d363245c0f35119dba979698539b8f9ef080257186a. 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/QZMZ92039014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d67ee91fdd08d777647d3b1b40e0ad5e8568c3e42130fc10d5f2b46b8855ebe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARF471200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0ce909e0e88327feba27cad47b333db84f29611e2a9c5c3cbb5d62bade8485. 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/UYB262400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0ce909e0e88327feba27cad47b333db84f29611e2a9c5c3cbb5d62bade8485. 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/UYB262400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d8aad1e66a510b642f5c5d5bab6ce07149a367830a2bb14b002424158decba. 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/UYM123000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6799f7d5c4582bee76dd549cc03c8f600d3a7a8c3e7a84f50d0d26c9674151e. 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/UYM121103054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70027dccdaf9ff54b6f3944304d24e74cde9b5dd1fa02f3a2c774a96df7c34f2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UYM121902954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0168f8aac36b044b74efa9250b355a59605e6e90984e5bd77ad264eedce916b. 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/UYM121902952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc684a319c4bb574cd4e4bad31c349bd59a38b6861eb19837ed688545ab642ae8. 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/UYM121902951.
Alejandro Balbis y Sebastián Teysera en Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70027dccdaf9ff54b6f3944304d24e74cde9b5dd1fa02f3a2c774a96df7c34f2. 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/UYM121902954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f13ad278518ce1f60b2f7f5c47503801be11a228ffa86fd06732b3e3478fd8e. 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/UYM121805613.
Las 100 Canciones del Bicentenario, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb0187d194b5da9f87161c24f0fd2e9ab08ce34b5e4769f4cd27867640299c9. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/UYM121201068.
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 0x804b4423d01da5dbd08b4f3b17c836d9946e0a7a7f7538771ecb72406de56d07. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UYB142123712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefde2f04aa12afd4f44527e420833a124b79a276a0674cf2ef8f1841dbcdcab. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/UYB262000296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80135fc3c49118fa85390b333515121b4a70588787d7b6b2ac68e4972ef57064. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UYM121902953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cb8ab13b73c0d0eb6163366ace310433bfbcf7db4976617d542648db2024fa. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/UYM121805617.