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 0x5dbd71e8448b3ff9c3bd8525bde0e785bd1b9db8bfe518624d69400fcf04d1c0. 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/8066fc65-b085-464b-a391-2bc8b574db13.json and https://artists.proofprofile.net/proofs/artist/8066fc65-b085-464b-a391-2bc8b574db13.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 0x0cf480717997b57d4dbaa7d813f7d8d079a1307700276d8c3a3702314b24ce4f. 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/QZGLM2179130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd322451b399f3d2d9c0f829d11ea843893d5638419aaa6dc8d42c0f655733108. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYZ1948480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3fdbf8e93db28c59d20be8d1b8586d9b8447347f7a4a1073b7ad353156f5d9. 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/QZFYZ1948481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b681aa6dace5962e37a8258bcd2ac61c8272d6482876fb14aa9674db844838. 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/QZFYZ1948482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3230850fe54b4134f22df292174e5f891af0153998c1e814234fcb6e8dcbb8c3. 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/QZFYZ1948484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b3d434989bfd105ff9d6f12f40128c03f15ee81d79f0d4c10a87602c080697. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFYZ1948485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6f4f8911cf4d1eeec9279cdf40caeb7637f74f8130e2d24eebb8b7d2328998. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZTPX2346138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67c4c74f029e03771ef05cf63323730b4e5500945558d8a61e749e84c77df71. 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/QZTVM2385576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b375a3fc145c89bd374f468ed19d11325188e1eeac99fb7adceb5bdd7752316. 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/QZ5AB2477359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60b53f98e9651a766d4ec15ddc94da673ed09ec22c0228bce6c40127227680d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ5AB2477360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148b09c5331af05cfee0d6306d36a5f1a757d6dbc8e875e60baa0e530edd8101. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM7282474155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8b7f46a3464aeca3415c3a8cc8c092c38210e6658facd2887676474144f953. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92423735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d29c532523616592167e2cca6605da0d4a50ce14d69e98929c544ffa44d29. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72410903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0baf78dd8d2411039d1b8b2aeef6d56e74faa93de1ddc03484f9e77eea72a56. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA72482156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1545084ac8147bf907ed822120dc2d6dde7d4feec2b9cc1ad96fa1b83fed7200. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME2405213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d29c532523616592167e2cca6605da0d4a50ce14d69e98929c544ffa44d29. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA72410903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1545084ac8147bf907ed822120dc2d6dde7d4feec2b9cc1ad96fa1b83fed7200. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2405213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0baf78dd8d2411039d1b8b2aeef6d56e74faa93de1ddc03484f9e77eea72a56. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA72482156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4388b6f1d5d988e47c8c63e8cda4c6b5391a3ef3bfebe8288e0fd6f3ece9bbf8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2453920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba77f2bb8aff53e39d3670a6358b35ed8cf0ff75e706730f2fd4ddd9a7b1dce. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMFME2516235.