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 0x6e27fa46ece994a31053675680f17cd6812bdfcf27d94fba7c0c927d9570d307. 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/dcab9cd1-37b4-4203-899a-c18d5d7ea385.json and https://artists.proofprofile.net/proofs/artist/dcab9cd1-37b4-4203-899a-c18d5d7ea385.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 0x6c0813d07f1b453918dddd524c5d754dd7d8bf9301e55944304d20f901cd7088. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBSMU5811549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fec98499f163c9befcf5371855900385357f054e3ebda728180fde08ea583e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GBSMU5811556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9e11e1ad5abaa751e52cfbe7f97597b7ab5020184e19de5919989f828566dc. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:40Z), 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/GBSMU5811581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4511bedcf3d9354bcc40693f4286c486bc8a3974e32edd8953b8be019f4a8f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:57:55Z), 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/GBSMU5811589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18cc6c401e9ebc66b78b4177c3f21f4c2240895c46df90818b72600366c9ff7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBSMU5811364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92780f89d40da6c91f925d3faac3c65151b3b924ce5168995c90c2edd0a978f2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBSMU5811365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cbce94b81e144c8f8d627c63822b6e820d2907535afee6a3ce96e12ca0eed2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBSMU5811370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69785045fb3284b9a7cbc0e00faf15305d390683c0065779c4fb8f19baf23895. 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/GBSMU5811374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b5e3ba18ed86e08155bb220004a1671db9ca4e340de751452cbdaf26dc2dc7. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:14:24Z), 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/GBSMU5815485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686f6cba7f2c06834e8ced2272af9a4a03d06d136c81bc6e04245ba3e32adc87. 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/GBSMU5815526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6420bf30e9f037ed5e4e91b3ff8888693b8587b3245f055432ff7c1fa96f281. 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/GBSMU5815350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7b7b671048a540e5626643a804476fbc9686064c9fc13c73299b6d8aefde1f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:08Z), 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/GBSMU5815199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0159ccacd032183607f2e9f02ce38638fca6d5f8b5d1b851783718e9930144a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBSMU5815223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e68d466fe7bbdbe616f1168328cae372e3c6177f3fe781391e3e50e7fe14019. 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/GBSMU5815227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aebc735f8fcb4a4756b0459fae21cb3786b549e4a3f9af5a66d804ce5076b0b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBSMU5815228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8820f2aefc97eb210ec0e4c1977fbfb272daaa0a2a6267885b3d9e7d18097eda. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU5815231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e2cf52bd7259714aa590357f765adcad8b78c349ca35eaad041a1c2aa8abe. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:44:13Z), 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/GBSMU5815232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18cc6c401e9ebc66b78b4177c3f21f4c2240895c46df90818b72600366c9ff7. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/GBSMU5811364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92780f89d40da6c91f925d3faac3c65151b3b924ce5168995c90c2edd0a978f2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBSMU5811365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156eb5248a7d5830861fb14752f673227700d878e16a26e1732cbbef557424fe. 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/GBSMU5811367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0813d07f1b453918dddd524c5d754dd7d8bf9301e55944304d20f901cd7088. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBSMU5811549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32e3fc35bbecef560e265aa95f4f02d786c7e63d52e202a024df028777ec747. 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/GBSMU5815198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7b7b671048a540e5626643a804476fbc9686064c9fc13c73299b6d8aefde1f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBSMU5815199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aebc735f8fcb4a4756b0459fae21cb3786b549e4a3f9af5a66d804ce5076b0b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBSMU5815228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8820f2aefc97eb210ec0e4c1977fbfb272daaa0a2a6267885b3d9e7d18097eda. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:40:59Z), 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/GBSMU5815231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e2cf52bd7259714aa590357f765adcad8b78c349ca35eaad041a1c2aa8abe. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBSMU5815232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f461e305af57ac5cc4b58fdc90c6f028aa69c6e09d585cb90cbbffa765e19a7. 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/GBSMU5815480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b5e3ba18ed86e08155bb220004a1671db9ca4e340de751452cbdaf26dc2dc7. 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/GBSMU5815485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686f6cba7f2c06834e8ced2272af9a4a03d06d136c81bc6e04245ba3e32adc87. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBSMU5815526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdec99c403520343248bd18dc484a35ce76cb03faeb9f6ed144b87bfe2eafa0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBSMU5815527.