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 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 0xdb6e452812f49e5a83d0533f52259a4695eff4e9630ca2537501d749df835cdc. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3a26986-4540-443e-bca7-029bf428387c.json and https://artists.proofprofile.net/proofs/artist/a3a26986-4540-443e-bca7-029bf428387c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yucatán a Go-Go Presenta: Ramón a Go-Go y los Salvajes Hawaianos
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 0x1957962b4750613fbd464bce8fd1a8302c345dccc72496f9b8258883b1e4f2e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF602100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4309453a261625c6e5193a05a0c46811aa21cb3634f8c888684a0f89919e1828. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF600700450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1dc14991b32ecb132f828cfc53ad56fc2d0370e8831efd5e61e1d2fe1e97f5. 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/MXF600601963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d6ae446c5711da10adc66a2f9da73a46418641b3c66031ff672b2bc414312a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF600601964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921e20d19bfcc00c3a2ea99bdc7f9bd9e555363284282d13274a22e8c7dbc165. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF600601965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ee8ab064077a606cf1fe7664ff87cee4184c14dd910262d1fae1ad02ab2dc3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF600601966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91de3616c6e64e268623103be5f5b311fab06f6af6e99298b0a10b29b0fa6a2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF600601967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cc93ba3f450b9b44061dca6f194b2890a3709d070fdde88413b01220cd5034. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF600601968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07018914648b339bb3206e335002e0c14cd2644d2a0e2e4584b9f8eb6d0d8c1a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF600601969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e4167ffaf1d1400c84455497af9cbdf15ae78581355616d15cb5dcd8c2cff1. 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/MXF600601970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb5960fe27adb155f500f57efd7fe1e2f4191e79c6d86a6cdcd8e667bbae6b9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXF600601971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9696eb5640566d14488894856bd7459a43adcfe9c55f99cd1e1b2950a904b1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF600601972.
Naco Es Chido - la Verdadera Historia de Botellita de Jerez-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50de4fd2eeb6ca6f2b6fc15c40623f1c4f13ea5e81315bad3e64a84a4decc943. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF601200998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d19d39416e208b9e359528aa83989d889adc048163e578549ecb97c2bf092bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF601201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf966766308f51edf28c133414cc1b021861be8a588a2a43d7edb3992d2dc8fe3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF601201027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ff58aa1d0dada0553b6c4ca91ca8f5ed3a3285385b940dc68e11b6a6db3ee5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF601201011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eb43f070482054137d66e7e70cf0250922867d26f7c1fe5d8414b5f196f858. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF601201015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa1d69b82c36aa32233db81c8509dea00b96d0b01e9dcac41869b6c25d5ae29. 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/MX3742200061.