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 0xa42fe4c5f8a3c42d09d36d8f8380099ceccaaa07f0a8d7cd68f9c7f9516265c7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47a2037d-b4bd-4010-bda6-1a6bd925637e.json and https://artists.proofprofile.net/proofs/artist/47a2037d-b4bd-4010-bda6-1a6bd925637e.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 0xa003c7539b8ef1f447ae7ff0316d47824d5185ecee9123da949b1d3b5155acbd. 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/QZNWU2455412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec306b64ebf2fd6c7b77c1183e6ec057d249241e28dba249e23be014d2856567. 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/QZHN32442097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f29c772fd4362584b9a13928a75582a3b0416301fd1a70aa931dd0e9f70228. 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/QZHN32442098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42003929e08bf520658f6bf11bad3d5ccad9b599ea1ec68a08af5c9e05fa918d. 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/QZRP42231109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958bc4d673857506b939a4014517287ca0cfbf7f2d9b6c5e7ddde1f531143670. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZRP42292620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42003929e08bf520658f6bf11bad3d5ccad9b599ea1ec68a08af5c9e05fa918d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZRP42231109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e45503a3c9b8a5468da6407c94aa2e0a58d8f2efaa4970166dc7d58b299b6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZRP42292622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58329ff4c0e94ca5c29033b115fc91213402bd8c104862ddf39986bda9c328e2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZPLR2239458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa258ec916618e27511175d158c0d19bec80a14ed8aafc38e11e72fa703d98aaa. 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/CH0012100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8128aba60d99de361cf8d5eb7379005ed720db131164efc79266f406f0b038b. 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/CH0012100164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2730520228e7934456558680d43451658c967e81f533ba2f5c64f75e43d108f1. 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/FR9W12213784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c944f3a92bcf126a48dae18a17e1dbf72b9b283b5dbed0e447dbf88e3dd973c. 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/FR9W12207668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ff1e66e2bcb4f4f41c5176be40f6837c72e574613701236185a71452ed2927. 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/FR9W12213785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2137f131abd7c1d98994c7ff0217ef6ea7cdc6a02ad54ae048648da27b5a2e24. 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/FR9W12213788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e4c40480fa7144a3179e81df9a83c8b41be707611edfe8845ef3bf60d94953. 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/FR9W12213787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cad302031852a90530373cfdb450264d552eb81ee4cd72319e399790430e2a. 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/FR9W12213789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d905a8af348662240f31bed7ea458df7ad7a5caeaf44598c6294601efc7cde. 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/FR9W12213786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5dea69693d4bb23d1b1da98441392ac30e08bae6bcfe10da98ef9a862d1513. 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/FR9W12213817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f85cc2a470a16d14e0bc06ca2bfa09edb2c58cfb02f8c2de30122f0862e43c. 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/FR9W12213790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952763faffa0e7641f622b77dd121c34173cff3e0314c60cf8dc414a89210eea. 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/FR9W12213791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa08d16b9d1f86f4455c40bf89ca1b3687cfdad4f38eddc27d185832e0629eb. 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/FR9W12213792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c308ac788f59c18138d531d8662b4fcb1ea23b0b4f9bd982f88722ffd34acd7. 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/FR9W12213793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1477a7d778f3dd04ef820fea00b8076a236226688036ea462154bcd4d6e16308. 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/FRR642200263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd2650619e13cca73b3d4ca4b41436ef8e9a09ce07ef6e30537118f8d2c28a4. 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/FRR642200264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cf031501168353afc95d42a5403ad0aad05c35508276d30b61e946ef255029. 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/FRR642200265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b55cae2a27b8e4f82be8b0e3886ff0f84eb4db018739634147540b9bf31ccb. 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/FRR642200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a5c664ccbd2f86955d6f53c40d433d7d77d7ddeb7b8fd81fafeccc6702d568. 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/FRR642200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa003c7539b8ef1f447ae7ff0316d47824d5185ecee9123da949b1d3b5155acbd. 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/QZNWU2455412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aa4d7c7002e8b7003cef9fb71626833823e008ce7bc0450e1b587cb7d83b97. 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/QZNWX2499128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3a4077edf8f2cf4e87933b71dacea9cdc426184fa20c5a1244cef9712d4b71. 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/QZMEN2230804.