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 0xf031096dea0bb3cd785ae645abaa1f53e450d3ecbd4fcb46e473b96bad852c06. 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/328fb201-d8dc-4e0f-8358-9514b36992bf.json and https://artists.proofprofile.net/proofs/artist/328fb201-d8dc-4e0f-8358-9514b36992bf.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 0xe7b59e4c801516244cf8a0d25e689fdd0ac002df189bbeb2a3ca8d1dc5fd6f1f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/COF019501786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033ce4fd152d0d5a557cb09620d16b1859215a7b4d882958b88d8fb218e5fefb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/COF019501795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4aeb4a39415cdae47828338374da28e954b311977df3ab3c4bc36d230472e7. 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/COF019401036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dec6f3107334cbe9a0cd88db5aa361e1423b67fa67115e3fe5ecb89ad0334fa. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/COF019401737.
Segundo Festival Vallenato - los Triunfadores...!!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a440694318e36972da19a1f01894dc74a8e39ca985319a02903ed62d319554. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/COF019501845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757cce6f4d3de2c08eb1ba6dcfb74343bf2137f9dfa076eacdd946f43a0ee555. 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/COF018100089.
Grandes Intérpretes: Andrés Landero (Vol.1)
Grandes Intérpretes: Andrés Landero y Su Conjunto (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf41fd0d3bce94b6aa6a3280457840828cc8a6c54040eba7b9429acd65d6c53. 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/COF019500995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fdd5043e6ba941ec150489613824a23e3864dcaa411d4c1d7ba4983162bb51. 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/COF019600521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4aeb4a39415cdae47828338374da28e954b311977df3ab3c4bc36d230472e7. 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/COF019401036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bac26f99b74db3ea93b4f4cbf84d0b49a4f827966b1c57b8b968f67c06db23. 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/COF019600534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56400b65f6c92540a96c861104f0c16dd5af1223ab5e77cb0e19862d379c536e. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/COF019500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac92b3a38dacd19b9e6f45c115251374060a17827fd95366076c26ea23f91f. 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/COF019600536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc735c748a566e4bc666c7c0866fb76dae16fae69f851afd6419f92d922bbd79. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/COF019501798.
El Rey de la Cumbia: Cumbias Con Acordeón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f693ec300256582fa228102161bcf1740e9467576ac8fda87b7237201cd63. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/COF019500218.
Con Ritmo, Tambores y Velas: 23 Cumbias para Sonideros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0730f4dc22d67f5a9bbe713e7a0ffdc3c89df352f87c68711916370f858320. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/COF019501832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4b6b02f31a0c315a826beeefa0bb56f94c8e722b309bc1f8055ac0a62e980a. 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/COF019500530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7271e2f635ac44c1cd746c5407c428e5f6e5090975a187db7b9f5263418a7458. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/COF019501304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa6f76972ffa21cefca0d9bbeffd8a5623c4dd9bb20c8ca505778d30d4a5a66. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/COF019401055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c00d3ad5851e5602834e2bbfcb3d9a02070fd7b396585d418ef9740390cb796. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/COF019501015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f8ad3dbcea40e140fa9f06942ed6c207aedd475062b58d934593518a17ae70. 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/COF019501827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e4c40617d0d4f6a8700d839554aa8766645fd6a9bc0176f4f92888a2d5fb0e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/COF019401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5725dc6172ba859d6deae7fe12634fc885732a532480159957177c5b6f87b2a8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/COF019600538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dec6f3107334cbe9a0cd88db5aa361e1423b67fa67115e3fe5ecb89ad0334fa. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/COF019401737.
Una Tarde en la Montaña (La Pava Congona)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a5c6d9830761352dccd323a91f77e3376a8fb83f6d0d37e3e612bbf527cdba. 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/COF019600418.
Bardo (Soundtrack from the Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085cded86fa2590cf39bfeb25cb8a5c790a34c9af10b86c9178d1dfd2aa03595. 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/COF015400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7271e2f635ac44c1cd746c5407c428e5f6e5090975a187db7b9f5263418a7458. 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/COF019501304.