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 0x06c53e3083edcf565b450951942632e62e9922156dd6e05710719e033eb115d9. 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/42c45097-ba00-48ba-aa06-41362f6b33f1.json and https://artists.proofprofile.net/proofs/artist/42c45097-ba00-48ba-aa06-41362f6b33f1.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 0x378fd3e4d1f342674502ce4d38c82b9f6765d209922bfe5f238588498819f8a8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AEA0D2152430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89acd0f1a89b55f77bea9d8fab7515c189167ec4499f92cea30dbca26d8d4ff. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/AEA0D2152432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca202212955e59b5a7afc989d23b633c2875768d9e5ce48a341d665660f3ae0. 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/AEA0D2152433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220098bbe546f5c6290895f1d9e2f3bdbc7ffcebf82bf3072cb39110d874d2d4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:41Z), 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/AEA0D2152437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53542df7811ac08ef3f19b84bc1b4b610ed6d09fe270ef017a89393e9061d5c7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AEA0D2152439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9a49900b34548952a0b3d0ed1f3d546a960ccc728787450f80feaa4216e75. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:43Z), 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/AEA0D2158215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c2597ec35f772cd206e5c6ece8d1f2f1c0b56d07fd4702652c16d033ef180e. 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/AEA0D2158216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5023c7074beb53a95b9407491ec4bf62e6bce03ba7c17ddc71a0197edbaf43. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA0D2158217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b723145bb8e72d69fddf0dc251b1e7906ac55be063fcbe87f2b11a923fdaf2f. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/AEA0D2158221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66a8d631afaec2a9ec1bf77b0dbc83f1c11265ce218297a93789881bcf838a6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AEA0D2166051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1b8f3a97e655bedb7437cfdf6fc84c5836cba345b224ea17ba4c1e46acb822. 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/AEA0D2166052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769ca68ff17a3a19eedf353d00daaf8668625305d375c0714a1024533d64905. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/AEA0D2166053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cd5dacd65a4cb3042b073ef3423bd09710e7489f66a8b95bdf3fb0bee58d2d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/AEA0D2166056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf171998d35d5c91428c33a9b9e344a378ae92e07f14bc5c3b0894235e08b11. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA0D2166057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74253ec4dfb2f4b1fe07aed8854a2ba8c03a04fc2835f0966aeb2fd22d287a1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA1H2207672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b50e6d409b9ef3fbbc38864ec06a46eb83f0035db2bdc41715f5951ee55a36a. 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/RUA1H2273829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bc0bf618d6497ad97b390ffffb3df7c147ea88558e7326e54e64adc173173a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:06Z), 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/RUA1H2273830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a9492583f038e9774f81d10c39fc1e3ee0991c8f8ad032e5fc1459bba51924. 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/RUA1H2273831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375735680d880c3da47ab893b524348bdd86c646976d92832b03a6cf5af8535f. 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/RUA1H2292665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da9ef5a226764bfdadc845baf572b2c7f65dad3a573cbe4a1b3f74d1dfd8f4f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AEA2M2233373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fb8799cdcd5ba96d20d507f638c92fb161467b172296034a0013983995bbf9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AEA2L2211564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987ab0a6c643b518b7abc5e63596fd2b5d756efddf7107b3fd287f81153db238. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:39:43Z), 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/AEA2M2187448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b34d4757f9340b7e45ff02d9e83a41f82f99828dfbcbf8b093cd2c21b6a78cb. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/AEA2W2328238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b03264e0f2e9bf171684d7db5bec400226eb88031f269bdcef2daf7d221462. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:05:41Z), 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/AEA2L2337005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4d172b704de70e3d8aa9464ce4f79a5be96f12b712fd2858da7f6a7c32a205. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/AEA2W2503149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7e437f253bed9f09a662f645366548d3302095e61d4802a3adeb7fe543d30f. 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/AEA2W2542754.