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 0x6215cff77c8450902fe638d6a582958b2c31bc311150a505d23dce3b3f19464f. 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/657a98d6-ab30-436e-b424-24d9e87c089c.json and https://artists.proofprofile.net/proofs/artist/657a98d6-ab30-436e-b424-24d9e87c089c.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 0x47c36396fc5e13d121e087fd6621133c1674a6ac3786f2eeaf348b695fc91020. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES5060906604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4635150a8bd3509324c0672a86353a462976e41641c2212566120d882ff76f1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/ES5060906605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c911f8344a6bf1139a62f7a02e04ac157690cbc5f607296e55e6080c10f5f1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ES5060906606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7747a29343b940ca62459c1ecb06adaffea8462e6af8c179341c3e96f4f1a83. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ES5060906607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad43c2752fe91115afc12373fe270e6f8db8adfc63bd76e1692aada5983d58f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ES5060906612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13880075cc8e4f5ed678b72c47b65afd3559cb4a02ebb2fa537cfe2ff3778763. 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/ES5060906615.
Je Ne Comprends Pas Pourquoi (Yo No Comprendo Porque)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129bf6c55854fc20b92f1330b65ed5c8c508365547236a2847c34eb7510b546. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:14:49Z), 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/ES5061406912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa575f21dd0b0e7d33b46b137de55f890a915c1a1115b07e781c15e9a8e69be44. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES5061406913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7492721e5989e23f59834782fd91030d767a1f7d6acac69cc1b2b3802a1bde93. 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/ESP411711150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb487871456da1f1b0032a7b7aeff64f3d447bd7545c5ff56d6927323f00ff1b2. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:22:18Z), 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/ESP411711160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd98604f67478d1a9bab426d073e00ebd70836d6c8a52dba4743a1081f00332. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:42:27Z), 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/ESP411711170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fdc6a7ab0b9800af4da895462128e5bd10c675c1c7ed9b515e5a5616c878ae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:33Z), 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/ESP411711200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03df3a264034837668eb0d5c0662786a3b55e90b2c65d226fcb9b5fc8d5e4f2. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/ESP411711220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5521260aada8b2a0103050de5ae11ecd78d0c8233a017a104f349cebf5ce84. 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/ESP411711230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf96d9cf3878fc593f8cb0866aa49dc552f5cde0a6cd5498c6a04485293589f1. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ESP411711240.
Le ciel le soleil et la mer - hay cielo el sol y el mar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66960a2d3d3296c78d09779c8ce99d2b93ad17519ff5d22964ab8ea7e0224752. 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/ESP412122230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df923dec80ab98dde49c0be4aee583127d6c883693578843d2869a2da1531d9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ESP412122270.
Les jardins de l'Alhambra - los jardines de la Alhambra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3601029ee71801279e5dbc0f0a73805cabdb68458fe0114014deb230d311bc42. 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/ESP412122280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d95d9fd3d64054998f38d6b334bfd80b99115e9957b2a459a49ff64fa797e0c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ESP412122300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa769461e420a1c332617a8849695cfbe392c828347a96d68c6954c7d7fb85e02. 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/ESP412122340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510bd94ddd3976b90dd589ae50a4750cae9229837b33e69d4d911f52ee04a6a5. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:16:51Z), 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/ESP412122330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fb43574e04f5d15107ca730b8a97fc289393c676d6d94ae8580c8bd03748d2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES5062504401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5421738ed508e5a90b798a6f04113f784d1647539463c7c349dc0749e8bd75d4. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:19:57Z), 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/ES5062504402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb257034c9dbe088b51df28181c55acd6d3c184de290b14669efafce21f0108. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:37Z), 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/ES5062504405.