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 0x1d846a683fdd021acae6b969d67f63b58d997e40c62e0317f2f5d689637fe416. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81579464-dc55-4164-8977-01280cccc14a.json and https://artists.proofprofile.net/proofs/artist/81579464-dc55-4164-8977-01280cccc14a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Joyas Musicales: Así Baila El Norte, Vol. 3
Joyas Musicales: Así Baila El Norte, Vol. 1
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 0x6ba55b6928162ac6fb7dc082c17e2321cd77463dd1867829189f7edebbbaad38. 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/MXD941804509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d1f2c8960ec027ed2e504a4de412f578869c5e391129010b98f98d9bc07298. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXD941804519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa4c6e75e562cfa0329002ff5f38cb783de7a813fe3d836fa96c93cf841c44f. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/MXD941804507.
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 0x8915e274158a4ccbe0eff884000c8fa14764494775323b56963b50439cbb1710. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/MXD941804520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985abc7ee4c3ee1528ec08808bc3a983f72bfeaf1fa9d805311a9098e2f4c735. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXD781904555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44fa0c5cc90f79228f89e76dc794ef3dc5ead8f5ecb74ba6c09f9c9a3e453e4. 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/FR2X41539024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a8124a1877fba18646780850fab9c2eb0e10f853662e3e02ea76bfafa5751. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR2X41539025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c3ce82bb0c9ef3a6e1519335a2892de51ff097a968be037572240061e358f6. 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/FR2X41539028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaed382485255855d757f542248eb77c8ae1467533929dfead1aca550669f3d. 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/FR2X41539032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce72699efbc8c2d6d6e419f02d7ce76e10f7098ba38bf7aff424e87332d3086. 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/FR2X41539034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edec9e4573476b7bf49dc6dab65df51e0520405111f2dc12f9c7b99ed84a76a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR2X41539038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d285ddef9a275bb81ca5f1ddf8804163b41eb2df468f0d78128d55be63f0ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR2X41539040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51afa9f4f97c35df3a47bf7e9bcff7e7d119c20812adf0d5315be424929d78da. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FR2X41539027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458c244039f327381f29180199bac9953e73b22f1dc67790844ef17c4029655a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FR2X41539029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aea6fa4ee8a35073bc5a891e2b25fb67ee45afad76a0d12a3d8a8b93e978e46. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FR2X41539030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d13afea9863992c56f0a1786c571cc0f1f4f25726b18ede4ff0d1723c4d7c2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR2X41539031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1792acde577947ec01cb251b757e8bfa5d124843ce9e80d619cf85e17967d9bd. 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/FR2X41539035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde75eb28136e967cc498834d37a1d93fef0c6f6e1e7398b0f516ae0424685e52. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/FR2X41539036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62036ceeb4fbf983aa73f68101dff588e68cd0a1cf839d384797f46a94cec4e6. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR2X41539037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992e0ed62cd00d8a9489ad53c94ed1d806a1a66a6f409d6d8980ae7dedb09e47. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FR2X41539039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc52814c1819bce4fd21645a35ccd31369579fabe9feeda6ceb11a4b2412ac0. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR2X41539041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053469d2d439cebd5db02bfaddde9c21907c79a9b14f0e8806066c1b36a8065d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR2X41539043.