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 0x7eb681b5f0a4bb6e7d8049647350f8491f8d75a01a999c5da31c7b58803e3b15. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9518c00a-5bdc-4a3d-94d0-555935773468.json and https://artists.proofprofile.net/proofs/artist/9518c00a-5bdc-4a3d-94d0-555935773468.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 0x49d798cd80554d606b007312cd4975e7ec1b000a5b50f46b749b5f11d82bb172. 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/DEH742519263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8be9c60add403a1aa8420bb29d7462e99c9da209ce4a04a16038544294c6416. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:48Z), 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/DEH742519264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464703e151d5e0aa62581a18b3e700dc5d7afc890273b3bd3cb913daf18aa2f3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:21:06Z), 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/DEH742519266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27315d3fa90273193e92891d57c3e0e197145555a215142f29769b6f15f2b2ca. 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/DEH742519267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2004c9c329bcb4b678d3755a31309f76db2fe3e937f176bef5de77614c93157b. 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/DEH742519268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde950729234c4c85a69f1e15ba76ef3133cef33917566c34e6639c0231000d0. 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/DEH742519269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da0f857e199e387321d5c0306c2ced5f865574f30f422c4284315553d8fe73e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:41:37Z), 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/DEH742519270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3e809807b3be44d55efe61435e5a3838fb68d2f40f08a611d37a3652bf9174. 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/DEH742520424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be2d64a7849db57c858db4ecbe714a14d146878029982d2b190eddc92b03cc1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEH742522293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93af62e5a8e58a7e4328b17890ad559d5b4e8e41eeb48e189bf42b1ea58bf5ef. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEH742522294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97502462e19c7c9885d24fa8f983512cbfde2c577d9f794b7ec92ce9349c9f68. 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/DEH742522295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4d9db9d451e8b7c4d8ecbe3ccce69922189651118e7906abf94bc1a12f122c. 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/DEH742522296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7fcb193535430180efc134eef47f5b53c89d05a847354c6c2e6cb52b583067. 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/DEH742522297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51333537e8610b376757c5e0091cfb0873d2dd7356afde34ea2c4f8bb7aed12c. 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/DEH742522298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09613b53d051f6049bff6f03606a046aef1feb590985a1a81e986dd57f3eba1. 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/DEH742522299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee03f963c630eba7d1f3708a30bf604563f8dd7b08259ae741e7b672b88997f9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:40Z), 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/DEH742522300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd293d8a34b56a4b87525af668e6f07e98e92920abc6eef189571648a0861a3a3. 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/DEH742522301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434403d5c3befab4f1a27d0d9cc7621dc17124ebba9b23196a7bcd68a59ae1e1. 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/DEH742522302.