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 0xe328dfc843af840b25fa11c829d0bba872365f9c5f36cb069a5bebc5ba57c772. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4585d244-2747-43e5-8e06-ea442747190a.json and https://artists.proofprofile.net/proofs/artist/4585d244-2747-43e5-8e06-ea442747190a.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 0x49a7090afa431b6ce93d0c3446aef35032f9d24a23e61a203a72897718a8d5d0. 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/GBWUL2408629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a448c2fcad8cdd5ba9f29791926b78f6d02011d92daa6534b872c58915502d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBWUL2408634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a6efa2bcaf20af9872a54a65b0329ba44d0e4095d89fdb8cd7311fc474d34f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBWUL2408636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd60cc7d552a90175d225a102cae33d69c95eb1d60808c70640b1de9a35aac61. 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/GBWUL2408638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d5c56cf6af9ea6d2fec1d3e78589d6c1fbcb9dbe8f4de7cb26596d475a3a24. 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/GBWUL2408639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24c680c342fdf740321c468472d503a87688125ede81628bc772ac053197fec. 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/GBWUL2408641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f53b54b5140f3536e404d00584f2e2ed4fe48786d3247a1cd730cbe6a3c902. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:06:02Z), 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/GBWUL2408647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213930489c5a1c6ac7efa3c0239ab02b9b4de49952bbe8a5add6372009c4b16a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBWUL2408649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2284f4e2ff8f3d26ddd339d559a69a7d3eb1fb07e9c309178a2f0f0f33cb20. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBWUL2463451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c9eeb64508a4767092b5c1326fb71da53de19335338a4e2b0e5e7a8daf609c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GBWUL2463453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed44f95a2822cd2ec3dd04dca6a3eb58c5d30981b9f0f38797d781e6ce8559c. 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/GBWUL2463455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d470a653e46d99719a7f0bbf0dc02478f2252a64937bd6a67ca145c25bccfd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBWUL2463456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786ac39690412973d6c2ce332dc5f7cdce96ae9c3f6fa5a4b4d1a092451db2f9. 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/GBWUL2463457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce706eeb6391c67ea7a649e5de8bfd9efc15e0f231d1969a6b57c97783370d63. 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/GBWUL2463405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909784b7d6349ea0475cf3aec8dd26653504c4e60cd239d740f3d71c6302b5e0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:46:00Z), 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/GBWUL2463407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfea26411a3a03fef508de2d49853202262543906323bdc9d2a868a1f2f6395a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBWUL2463409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93178da5c9baa5b2b71dc9cc7e1561ebd800f23575cdc001c52410a135be2153. 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/GBWUL2463415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb843a229b9006354bb59e58a2b20bebbf87ff6d8ab52d02c4433896c41af1b. 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/GBWUL2463417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bb9737b71d801cc0e2e2e51837a938a39281085c51db831dd088bb59ed146e. 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/GBWUL2463423.