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 0xe369cbd5f019ce383f44a68bda8eafa321b33b27c5adabc0a656b2b2f9cb0e02. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b6cc53e-4e07-470f-9626-fa3df0ad31f2.json and https://artists.proofprofile.net/proofs/artist/6b6cc53e-4e07-470f-9626-fa3df0ad31f2.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 0x9d76c4762347b9dc29b96745e3a046ce953f7955ab18d449c38eb713be3eb7ff. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBBRP2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa09f7c7a23a1290699dc7a32c5b5ba5ec1ecce248a17dd386f8a5abcce6ac49. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:07:02Z), 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/GBBRP2000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e26beb7cca57458719ff54a9c54d5ee21aa4d3e84eb4c318672bf8bfab7ae3. 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/GBBRP2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339beff54c7ad49f8639df16ad37a117fcd0d6dcdd1675f53f1c7295787ef5d1. 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/GBBRP2000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceabc81c0c9e62a230fba8ccaad45f6df17ce21d160197606aeb5d371fb6219. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:23:42Z), 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/GBBRP2000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed9454d9ac904115c35fbc351097320203c4c6e839d83929d902f84a3f84d38. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/GBMLT1501293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179046da071ccc1e92531a234e29d2a8e0133e1e5a109409ffd4d309501c0e52. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBMLT1501294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567f0aadda82cb70b0c191d9300a3520cade32bb9bc1b391b8e4fa18113defd7. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:11:49Z), 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/GBBRP2000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b0877c3741a08b02438e5899395c81a37f6d74c075fb8440e216cb2dd54d26. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBBRP2000272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e79cfa4aaf8b8c4e7c59ca66b39e4dbc85c9ce81a4668bc97ebc25d9558fe91. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GBBRP2000274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0737070a397e57b4935a3d6f96e71118fdb1dc0a99f71cae8483e6896d1e5f. 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/GBBRP2000276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd70dd37bf1d89f423bc6d485aba4770e48cd9922e98217058ae5697aadcc47. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:30:47Z), 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/GBBRP2100593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3c1a52326a8111bf88d1f5b981c18f1c6005b3f6cddb8b6008c5e5fbffcec3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:04Z), 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/GBBRP2100595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a75133b626e220dfa80694b6f36d5fc0d453fc41ca219cf36914895f332dc8. 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/GBBRP2100596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c578125e598e9154ad3a0d0c5b897d6a8a8c09a9593c4189fb2454a0c0399. 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/GBBRP2100597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f3e2d16751bbc6238c3772456b3078614ed380337d4241f5a7e8f5b6d3a7b9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBBRP2100598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd02c6b3111310186b776ccb602219680bdbb94b9c2dcdc182ce76c85dd8e11. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBBRP2100599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a7ec58ae0f51797bd2b300a58496e0df2fde84245d34f46086d0f5359550e. 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/GBBRP2100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4f696f08ea59a51032e4aec63518b9acbbe732e476a4b0671ed039cf09b469. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBBRP2100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7707c564d37fed47f071271f3db5c6a71f901cd7e0476c3a5ca110a0cec76bf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBBRP2301108.
Control (Live at Holywell Music Rooms, Oxford)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a93ee445aa5223ad9d413a3afd5f3b6d30e682464a489ccd45a50a4a6b0911a. 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/GBHLW2401494.