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 0x1d4cb42e116f5fb3de92110853faa223e7ecea7657d8e321d3450dd8e0255e83. 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/88a355a5-fca0-489c-ba58-09b0c8b552d8.json and https://artists.proofprofile.net/proofs/artist/88a355a5-fca0-489c-ba58-09b0c8b552d8.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 0x8793da6fa173d0ed79f3f90f4fffe4939a2cd9a17b3c9ef76e31a8f4a02d7c28. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:33Z), 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/QM6MH1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7617216c259488fc8246e7750e4d2ec8f33fe4c1f1aec43b0e4900174e84b0d2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6MH1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952b7bbeacbc0bc9930d936b19d42d0768ba12bfef9bceef557f1fa581872154. 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/QM6MH1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c4bb6bb6cc4e35a494830ac96b6cf5b124cfa51fcf0048d5c15363c88647c7. 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/QM6MH1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cab38c638679b6ae52a3850424c28364b832c8d390df666adf81eb3fc069f9. 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/QM6MH1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4870d08a525bac7d9a4c60a53341bc6aaf8b2f136b29b053d1827c0f31f541. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM7281585586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153caabf1a47504f2aca036a4a6eec5e19f113f2cefcff217d18605f0c80464e. 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/QZR8E2200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8805732460dc4db21b11da7c8ae7211c5b3c04881fabb796e63cf691c28e6293. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZR8E2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665b6f87a40a1d5b931654c2a6926a0f72e983cb95a3278cf0b2065000615b0b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZR8E2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e736feb4fbf114c011517f2f694e59b5634ee4c3bde66beeb56b76e8673a9a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZR8E2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e736feb4fbf114c011517f2f694e59b5634ee4c3bde66beeb56b76e8673a9a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZR8E2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e736feb4fbf114c011517f2f694e59b5634ee4c3bde66beeb56b76e8673a9a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZR8E2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7084728644a6ab41579e8b6e7e8d47d00cdb1cb49f7e041a22ade0ffef4eb193. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ1732657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d3adae3629b2b7c1ed8d3ef7e0ea6d0e3b6ef177ab408f1df1c4f15f3a1a3e. 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/QM6MZ1732658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d74c3c52a25171e49764f14485ab14eeec901f314299c0503b1bb88c72bd175. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ1732659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04993b9586956da558ac1a203c5c1c21432d1da48052182f4616ca05037276e8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6MZ1732660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe8ce3e75e9a33df88680e594de3d8e553ec971dc1ad87ad4e3649249bd89d2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ1732661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabc611324bd012f8948eaff932b97e60011ea3dcf95cbfc495bbfb9dd59b0bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ1732662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c1042291feb5994cf20dc98c92a8c4eb9e4ac2caa9e1c061f285f019978cdf. 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/QM6MZ1732663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415dc2dd6d16cb5246d40dda834a318149f71a36711abddd92d7c6cd426a1a18. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ1732664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f41896b0ed262a00f910bbce7ba5781594ae7e8ad798808c03457b1c327aff1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ1732665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1ea79a674dc106bc32b863212f26bb6c7c4104aca5489310a87cc5f350321a. 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/QM6MZ1732666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f9c07a49731ad4b2a4bafef82ec78a77fb69ecaa283cd0c82f473aad1ccb40. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ1732667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a4b94c674802f6d835d1d3df06da9a6ad4373efeec48df85b086a97783ae2e. 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/QM6MZ1732668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f25a3cf13a51ce8aa93e0ad42e2486462977c8a78e26ebd1f74fb4bd5aa28. 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/USA370693432.