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 0x97edef9552311ac3677f08cab94106296e95d9f8a68deec0c7e5e3e5ed57ba20. 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/585c405b-0ccf-491f-b931-c10da988d92d.json and https://artists.proofprofile.net/proofs/artist/585c405b-0ccf-491f-b931-c10da988d92d.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 0x2f5e0adab8b29bee46fd4812f595fbc2fecf935694d2d9539fb6295923bdcbae. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USJ930270282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8d76e572fc34108d5f20b4ac05ddb64d0367cd9e61211cde65e31e37d9fdca. 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/USJ930370174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9519f886f325a7d08c1fbafd83157e1d64a9d87bcf6671655968ae3288984d. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USJ930470217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25d63b0c84ee6cc0efea173214d995dadf9375a3fd21d0b21b0f580c723eeba. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:18Z), 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/USJ930470219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5973699864ec0734e5a5c6a6cb075ae406fc682c889f651227a497ef4bfc9610. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:59Z), 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/USJ930470220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42fd6cb43a80f21090d78c8b36c4c2cece4582cbb7f6197fc1b8ee361c7a0b3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USJ930470221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d5794629f840db780ac5117beb47e19055d63ef60934394558031cd3561da0. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:48Z), 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/USJ930470223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ea73742a4edad3bd7220fb3d94c07b275a3f16835d85910af00b972276f2d8. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USJ930470225.
20 Polkas y Huapangos (Historia Musical)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f3d5a8e823772d1e6cea1b33eaa28e01a38a1583eab5af58178ea0636b17b9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:31:59Z), 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/USJ930070196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b04f7d5064459e2009c4c3ae75ad2a7a8e9ea581373e3a66d60d78791bd9c. 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/USJ930070198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07840b4d6902ba869f1df2e6ce27c529ab1a52f527ea20c304fd06da9eaef334. 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/USJ930070194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4cdb7db86203c4ba5eaa1beea11c672db44553e03dd39d03613e649dd8091b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USJ930270278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda84ebeeef1edf2cf1852418fe0aa1b46cbfd3c357dfc6b5067bda4cab9b5d58. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USJ930270289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a518587adfed4937869cacb430780774e704e35f4e1c74171a7248d1de18fb3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USJ930070199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf993a08cb0fb4c76fb388e65d42aa4c789817b6e9102ef31a34a62e192c7502. 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/USJ930270284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9aecba5d72a5d274e4bc6fd173d150b1445aadca1698bc7267e0a1dd4365ec. 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/USJ930070005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d3a12206629f9ad6acaf2c367e21959e4cba61c6f53392519e9c8c29d9c334. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:59Z), 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/USJ930270281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7b031cad8732df9858207d3110c673d1717884d2311114e0187a63213660b8. 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/USJ930070197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbcaae7fa580c5041c7bb592d2211af664a97a8e650ba8f7eb005b616a453bf. 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/USJ930070193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bd4d584dfa4641091bff0de05af281eb2e8683fcf8357c076c81c9df637d47. 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/USJ930070195.
20 Polkas y Huapangos... Historia Musical