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 0xa2354f57072b5e7aa7c13ec24c31a6461df3ed7089a2fa996465c4537e1f8498. 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/b0d00a67-22bc-480f-97e2-5ed1211f57ab.json and https://artists.proofprofile.net/proofs/artist/b0d00a67-22bc-480f-97e2-5ed1211f57ab.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 0x73a5a9db0fe53a86cda5b88b98b2c03b73142dd7779bcf15acba93d86bb444f3. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/RSA4K2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a5dd139764d2439f611d5ab1ef149c822e3a2943bb36d03e8ea434955151f6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/RSA4K2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180d248c149736a9a652c12b724bf96c352609c1adafdf0728e7c083f3b37eb4. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:00:04Z), 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/RSA222307307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb6637432bbc560872f2814a9085cc1d0062d8da91d67725d810c0ba26c2682. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/RSA222307308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844549092143e8fce2029f1f56242b2667ee16344e7623c4cfd7dbc52589a2e3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:35Z), 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/RSA222307309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ceb4b7541313961f70ceda0be7ff758e42527cc8a41ee619fbe56c2e8b98ab. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/RSA222307310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac377cb69d1f762ffee90a905b51e1be2e41f06d7ea1104ebee04005df12479. 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/RSA222305459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569a8bbd0e6c403ff7bd20a41494e84ddec3a562f04c61b9c97804c21c065397. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HRA8C2400186.
Rejv Motorola (Povilenela qr.wella edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c2c1fbcee884b5e0c8ab783373824286f4cb64f1b72ffdc7d5fade80ef2a7c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HRA8C2400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0647ccaf1c761496cd07d825ad88fecf4b79c99cb4d1bc7e44ea952b96b48c7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/HRA8C2400249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72644e626ebb3804da1576bb2c8b2b76e7f562612c63005a94b0977774c565c1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/HRA8C2500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569a8bbd0e6c403ff7bd20a41494e84ddec3a562f04c61b9c97804c21c065397. 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/HRA8C2400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67410c4a4243d866ad16a9631fa3dcafbf39cf596db31141b5f58412c6893b30. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/HRA8C2500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5ad094454d819d2cd37aba2794c20898de6c4554e6f5a0c6cda7957ee5182b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HRA8C2500060.