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 0x3fd15f554b179862bbb858a285efca261838628eca17d13e1f8218343f3e3a93. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f846931-beda-466f-841c-2d3d4e4bcba5.json and https://artists.proofprofile.net/proofs/artist/1f846931-beda-466f-841c-2d3d4e4bcba5.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 0xad76c2b445622e51d4f927c7a16ab1893aa8e0f40e71b4f8e87f593272c57768. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAJQ2593634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d74cead21010e1d99220eee6202a3042a622b0d91148f719ca4ff001c698aaf. 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/TCAJQ2579946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9823e25519417b74bea88333429ddeb8e3e3235910597ce29460b44207ce52. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJQ2580116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85aa0c63c34edd3db66463f5aa0ecd5182148e68614795ba21fd50512f82f39. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAJQ2580205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceb1d0a8b298027d61f4a62941291cadba472fe35e34964f12e93e7a0056ea3. 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/TCAJQ2580040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fb502d3fd517a365c1a8ce99acd6ddf9af5416a5110ba782606e28583cce0a. 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/TCAJQ2580236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b854c589bfa4c78522ed1fb561e5023f192360db41852b61d0795b57d104d. 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/TCAJR2580133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4989975c465dc51829e9cf26614e47e3957d6708c733ea77ebd5911a0423cc. 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/TCAJQ2580081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ab0ccd386253042c4218ce94502c192572b75d5edae6ab8111af720a535590. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJQ2580181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcfc0373564d63d231d3c58c4c8ad9a8b761a4a59b573ed0a086083e764a615. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAJR2580156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4d56d067854d49d2f4df71e2f3eca4ca7f842c41be69c6c05282d55556f2c3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJQ2580001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ee6e10dba39e8e4db36988f0ff1e69c20d3c82904eef5e846267a321ed03a1. 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/TCAJS2571226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2182c32fb6d209ea942617dc6882e475158d9712f429275f2b557ec1e3c8347. 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/TCAJU2567713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b0c8e59d295962cf5cb4371e6f698a7c5572494a530fcecd33fe3850d7a8e7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJU2567561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c32da5f6a89bc923aece0406573f75c28f5123ab08fbac767588df748f7700. 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/TCAJU2567734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a08e2d254c024e7c33adf55521d59ade88b1e2de33cc00e57db31d99d4a1a35. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAJU2567692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aa2bc2c0f73dd8561d20d7849895bf4660411731ba6e86c7210a98d90c795c. 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/TCAJT2567658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90e0f6e3f6cf323f01d2891979acbc940e47532e6bb038ef996e15acab33fa1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAJT2567644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a4a726ed18b0171073e87e95258430a1e794fe366935fbeb3028fb451ecade. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAJV2567676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948f938eb05d27a4b102b3a424836899200b691ce23325fe9c5047ae4dc73ce6. 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/TCAJU2567615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca283fe15c1ec37f8e473994654aa1360afae8192ef010c255e97cacab023ba. 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/TCAJX2536857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcde6f9c00005d74d751269380863a1397f18697cc37e9763caad9b5f74be3d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAJW2536657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a142fd01996fd737ad32ea56db1f3de64e77f91466511a9d95f63dd45763fc. 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/TCAJW2536445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc006bc4a3dd5d89efb9c85c981322f09191e07fc49f497fd570408acce613624. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJW2536756.