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 0x2fb4d9383add029572cce188aab52db38f90e00460e18e14f8b68cb68b9aeae9. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b156aff-77aa-401b-ada0-c69fcee2a187.json and https://artists.proofprofile.net/proofs/artist/0b156aff-77aa-401b-ada0-c69fcee2a187.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 0xcf7d621ff527c329f66757ad57700462b189d80b896c715b95446fbd4f36352d. 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/RSA132104602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54373a3b8c261774dd8cc7511b69438dc79499aea7bd016d9c0f4a62b1d34ad. 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/RSA132104605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df65d2cc1e5a2831640e556d1660d86ebb9cf087b01c5cbe16e9f2f99f77990. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RSA132003801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f91233e690b9f73ec4654e6e31ef08b0cd65e752e433084d8fddd54903bb4a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RSA132104601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a66f9940c4e7063202fc201e3257eeafcbf4b4b8b7ec51f21f6a1c2b3492d9c. 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/RSA132300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5919be8b10c19c951e3befb5fc5e6b17b305a7db21cd8b8cb049e3948002f4df. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:04:16Z), 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/RSA132301701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22e18b0bd284eccac00e33fa70019489565167d9bbf2ba51a33213783e87d4a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/RSA132306102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0cd7eac0b9b91133449564b76b44472d4ff3c58650ddeca9b649b6e67cd5bd. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RSA042400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4492210bda09e05891bba658f2bb02feca5dc2fc05af0b74b21695dc17223f54. 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/RSA132504303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4174470b5a3cf3fa4b55d91c14680d5e84cf4509c6da1a2543f2a1329e4c2e7b. 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/RSA132504301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f15cf22e44ffefe04b087598a1e0996c11824581f53b37e1d07a8356f97dc1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:51Z), 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/RSA132504304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ae2cb27f200b38841fb02f9fb34704b9f1e08f7af729f562654da42a497b07. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:18Z), 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/RSA132504305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5031008188455a57820252bbfc1255c4eb9a6fcce9501d415dfe256ac143e67. 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/RSA132504306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdc3e2185e3fb6bb867367b750bb14a2e1177ec1a1a7279af6f0f9663b1fdaf. 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/RSA132504307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a308639cec10af8c298b229a78582ff5d1a124efb2a5382315fc6fe7502240. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RSA132504308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087ad81a6af4c214c3cbe650abd64b5a0885ffd49148ef9138010ad29cbc48e3. 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/RSA132504309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf228f57f62e9753b2a1bb096df64fffe51585e974884bb0233c1688bc84b2882. 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/RSA132504310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca60f954f00c34571b4784400f5480e1aeacb7e5ab7a2a6b09c52abc7072287. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/RSA132504311.