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 0x98c711517493ddfbdab78118a472a79d89e8e43e25f102a67f49a8a566b3b8a3. 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/0964df3a-b684-4c93-b731-975baa27f247.json and https://artists.proofprofile.net/proofs/artist/0964df3a-b684-4c93-b731-975baa27f247.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 0x170897df62da7ccc5b01f84ecc664b87a9ea05f9153f466e0132fe9bcb17dbc6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEA372006898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf9ca060feb8dcbce699c52b7c011c4a6b2f5046497ad36c6ca34642e4492bd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEA372009744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dbbefe13ed5fb482c82b3254ccb44061fbc6d42c04e448671583a32cca46b2. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:58Z), 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/DEA372010676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706311818ff60f117613618c1f87796258cb07d41edd2ba7fe35233c60473e54. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEA372011338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3082bd9d61043aa32e12f9cd15529bd3739cbc91b0cb6bce2b91167452f3217. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/CH7812225346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637e9a8bdc12fc1c8cf67927c4231d29112021765e2eedccdd276a6baa308ad4. 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/CH7812225347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8602c1ee5d0dcbd64ed042808eb2108cf3751a31acc3f3324b3723f31202af58. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CH7812225348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d61515bafeb1717f6b057096924733597b84a022c0df436429101cf8cc08e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CH7812225350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db81779f2bf7d1c076d80c68ff1e6617be09913b7d25373008d2e2ec6d0a1bc. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CH7812221586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095782c1466e48a53f76be70d0a51dd8752f64c1886323b898a7b576ba01d9c7. 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/CH7812224890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b28d55362d5f00a70e76e258be2238b3db23c9edf5c6e2856e3d44dc936084. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:59Z), 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/CH7812225351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d6ec2bf38668b82c1bb5a6205763ed78cf0d6aab6374f0d9e5a4dc67b6b7aa. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:25:40Z), 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/CH7812225352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e44d1a8f5a2077f592fc87a91ca4ce55683947cec07ddcd60f6dbd1bc2255da. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CH7812349034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a727dedfa0dc6e8063c77fee72acbeea7bce51178d63da7034f12819ad5510. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH7812351425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa338044c6329b998e437a6a9dd8cd6068f850f4e610f21102dcdaa22ee0b5e8e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CH7812355251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd3fef9465c009bb78e682a72c2592fe47a3ca8bd83d183e7c32cf0e94b3931. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/CH7812412726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5577ab718369b339c90562cc91a9322f297428bb964c522ca5ee5a505465046. 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/CH7812417608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f8bab81a32a967a40832da09d66f152be3652099dfb9e9bd593700313452e5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:38Z), 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/CH7812419199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f8bab81a32a967a40832da09d66f152be3652099dfb9e9bd593700313452e5. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:21Z), 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/CH7812419199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf9ef90e22762404cda210384c86e24ba4cf3775f3b632aae7d74a08b6801f0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CH7812425962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf9ef90e22762404cda210384c86e24ba4cf3775f3b632aae7d74a08b6801f0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CH7812425962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7b933bd7f201f070bdf24efa66390eadf2dc056a0bc6ae66b3c13969e46656. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/CH7812528333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7b933bd7f201f070bdf24efa66390eadf2dc056a0bc6ae66b3c13969e46656. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:11Z), 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/CH7812528333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdcfaad688bfa8fcf17e2d9489468c42749e9e3d20885973d2da6b14731686f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH7812529871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf9ef90e22762404cda210384c86e24ba4cf3775f3b632aae7d74a08b6801f0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:27Z), 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/CH7812425962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9419dc0eefb3c71bf4936d0226bac6d5191eeb4507d628927e251821709c6bd. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CH7812544199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc621f54539f8c217bdf34bcf2a4d2546e24de5ad8e09e847d7da9f4e1550b7b0. 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/DEBL62400010.