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 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 0x2f89328fd16203af1ab04b4fb5f09560af4d3f7659de2fe3ff42124933c1dbab. 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/24ab4ac7-87d7-46bb-998b-b96b37aaedf6.json and https://artists.proofprofile.net/proofs/artist/24ab4ac7-87d7-46bb-998b-b96b37aaedf6.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 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 0xa7edc9a43b764f1fd24ef8c389c8aa1afd1a13e53789ff7bfee736729df2786f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ARC571802277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9771d2f2b96cbf0de7f6455bacfc349a6734c631416e83fc319e93df10a6e27. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARC571802276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a66a44489e3da2be307e404192e5eb872c0e51190847479fb3d7387cd825c02. 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/ARC571900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54c713a0b8c8810814e07e7b5a9547144f7cdd80c38598f30771846f3477368. 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/ARC571900244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b92371707d98d0fc94225ad28c418c4d418a80cd16c340eb1c11d54f5f8e0f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARC571900472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0807f111c4f7c47504dcbe48ec3dc15914d8ee2af167567d9c5977b90d41c5. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ARC571900944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4334214e0815853ca7b11964ea3f0c832312edd94903c9dbcd3698915387f815. 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/ARC571901187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0107650189494b8d0df3760f85bf8fbb4079ce08ecedad05a99f45ba967e2bea. 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/ARC571902509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f2384d5a46e2550c840d53c1d693792ca5892a3caf7a56609d2425719c483f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/ARC572000533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b13f01e5bb979db8391a2fa073e05e004b8fc4fe923449bf555195e13fafb7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ARC572001470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ecd70bea360b04298070f183ea42f3a61d3d7f18c6988740bba531c469fcba. 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/ARC572003199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa595e4f87a6b5047a8a881f5d301fa1b11e44fe1dd7f6018020ba4eea5510571. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/UYM122003785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd7aee148182356e19cc7d5e72bd3a5a6a9e2e304d982eeb40c2ef6129bc79b. 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/UYM122104343.
Entonces Que Somos / Queria / Le Hace Falta un Beso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489396d1b65030b621ee5c6bfc2ef1916d3b43c265d220a5f26114d8e7a2ab88. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/UYM122104571.
Mejor Voy a Avisar / Ella Baja / Ahora Que Te Vas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa695c293c2bbae2e1acde18e96deb1c9044dfb202cdb9db800fd512b1786198e. 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/UYM122104572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd6fe23dec287cc67131ef00861effcb323a009e6b2d712fe51339d32a4204. 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/UYM122401887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c20d94e7f790acbd5cb9df7b8567b34c3b7efd9b328eebd9febefddf8c6377. 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/ARC572002426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa266b9206266867e37ee0e2ca950a80ce3d6f5ba7efefd4b122df448ec062b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYM121806414.