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 0x1f6c46f8b65318cd4a1c8e19f532fde043cded3441f0d20ff0a99d6c1a2c66f1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a2f4037-51bd-4055-aa0b-1f4ed96527dd.json and https://artists.proofprofile.net/proofs/artist/1a2f4037-51bd-4055-aa0b-1f4ed96527dd.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 0x3aea2450daac5b67142d670d4540b84013bfcff1db3de3a5897abbb93658f10b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:40Z), 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/GBLPF6683329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b58a2e101bd026ad298dca0d35e5d68348cff79d8bf1cd23bca2f97b5af4a8. 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/GBLPF6683330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa69051a9c7ff2aa7f6feaaf1e3a6c2ee2984abc30f966939eba7d2e11799634. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBLPF6683337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa449781179c984a4f6b209c256de3ef9e383fd0ecc1db811f77a40daa38cd7bc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF6683342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8893e667f83f0fadc5051992d732e5ec84f1f9530e190806b977319de524bb73. 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/GBLPF6683350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eb0e60f8d90045979a8c56084fe9749af9678c7c07b9dac3847a8f3ec5b0a9. 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/GBLPF6683351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98ff3ba41eb6aaacd675823345ce9596022783d985096677d2d6210d3581501. 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/GBLPF6683357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354067f19656b73d020cabba83695e9bbc4474aa152ac651a176dd86fd9157ad. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBLPF6683368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e11f71d72d650c85213022b6d489e4c93984f7d474c703dcf96c476fdcff032. 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/GBLPF6683109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef567c46a090cb63d4d979f8658a25fb48129ccd4afb9cfc9ca1305cabf5349. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF6683403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b0e0369d73bd5b757e33b5458b956f972bf749681a9211e029cfa62e841225. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:22Z), 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/GBLPF6695829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e274cc2d92201dbe5216b6f088c25b0b3e8d188b3cb992bb7f1db42882a5390. 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/GBLPF6700246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eb0f2f2fa6cfb15700bb02f157e24ee2d23493c9d8e3eaebcfdf740a432653. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:37Z), 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/GBLPF6701895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62df4578c465a809e5f73c8d895d92cb90ec2184527794d54980dacd92f55904. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLPF6708511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7df4a9e4bb9a6492a0e65bff61801fc1809bb591b6c6e4e312d010151c4096. 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/GBLPF6756536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ce39b15b839ef954fc02409607e1ed7a0020dd3ede61a6741e5cfa2a718896. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF6760072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8783c84f194cf0383a8e5b3759439f576abe141ce1ab3c8abdb5b6d5475bb5ea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLPF6772272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a88b23e78bcc6d3e55d96b8fcabe1a631b30e8b471e1f8265d7f5d6e11148d4. 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/GBLPF6792054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8783c84f194cf0383a8e5b3759439f576abe141ce1ab3c8abdb5b6d5475bb5ea. 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/GBLPF6772272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62df4578c465a809e5f73c8d895d92cb90ec2184527794d54980dacd92f55904. 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/GBLPF6708511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf610e27cc6700a9daf94884b5358e240a1242fbe9d8618d6cce2b5b2fc31eb11. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GBLPF2508680.