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 0xfe223509ceb84c34e4a12c84e89d5b675e7dfc918507c447ebcfd3900754e367. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a50e0f47-da83-433e-9a14-9a042763448e.json and https://artists.proofprofile.net/proofs/artist/a50e0f47-da83-433e-9a14-9a042763448e.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 0x82042effe0f629a99793f5e496e87d03d07c5f31ab8c98c3618e2692cc7791ec. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZTPX2173151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82042effe0f629a99793f5e496e87d03d07c5f31ab8c98c3618e2692cc7791ec. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTPX2173151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82042effe0f629a99793f5e496e87d03d07c5f31ab8c98c3618e2692cc7791ec. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTPX2173151.
MOVA - Algumas Verdades, Outras Mentiras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaf5a789bbcf0f9c6bf35b407af640d65a8836310bdeec27861ebd241ea89a0. 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/QZTRX2225770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaf5a789bbcf0f9c6bf35b407af640d65a8836310bdeec27861ebd241ea89a0. 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/QZTRX2225770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66cb2fb99c654c9ada16bb60539198ea9efe199d51a62ac94f4252b8d07fe93. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLZJ2370977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a0e395881b37c20b15de57c87bc6360260b391dda1e9e91a20880ef1a0db07. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:09Z), 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/QZNJY2391555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29fefd950798d9cf7460dd69951dc3e19f348e96f7f04c56050939a3c69a71c. 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/QZTPX2337784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29fefd950798d9cf7460dd69951dc3e19f348e96f7f04c56050939a3c69a71c. 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/QZTPX2337784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d6e15b64145b816856ce8808c47ced3a05931c7ea832ddbab770e1a5aee321. 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/QZW9L2311233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d6e15b64145b816856ce8808c47ced3a05931c7ea832ddbab770e1a5aee321. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZW9L2311233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c26c54e94af6765fc072dcf653feb67fa9668d1f34af2ee478a3f6365dc763a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BXSSW2400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce1af78b07f9f958ebaa3c4a1ff192211b8f14293174c3be08120e0a5293718. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXSSW2400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4878b364e66678dc59679a5e3289dc2ae965f482593c479857b3d3387bf92eef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXSSW2400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ec02d6c0dbc0d0d1856fec435761b6f525c0cc1f6bd62826ee32f94539d6b4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:03:20Z), 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/BXSSW2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb30bf251fee892e71989ce6af66c90b5573a7f7bf90d7e91497367ad1099f0d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXSSW2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf47a0910d848d91ef7606a0af37813345ec42937a371713c0e50269d3378c7. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/BXSSW2400128.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4455f5ae65cf696641aef8da797097db6bfe43019b916402ac15c242a1fa40fd. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BXSSW2400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d75ca59e4e215d68ca6ffde11e4034bc33456ef36d31a29cba32ac7c44eff7. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/BXSSW2400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f5ab9621c322cad63890a378f9ac22d5ae771f29349d4e40c2e4699c823e95. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXSSW2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083a3ffb8a916edd6df0ef1eb1b9b18ce6c581b7582ca83b79abd1f4bb3999b1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXSSW2400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1b6a3968e138053611e28eaf270443e32a82dc667cca7eabf9a26a69615ee7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXSSW2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54501da7e1a9d025aef0a004ee95fe151dc50ff3fe6ea2db9d8337a2c1be7ceb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BKQDO2500001.