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 0xab7dd3558d0b04d1f9442128f939290b737f73009a95f7d0b33f3fdc79d3dab6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c66be7c-fe07-4781-9687-ea540e922e7f.json and https://artists.proofprofile.net/proofs/artist/8c66be7c-fe07-4781-9687-ea540e922e7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
100 Puerto Rico Vintage, La Isla del Encanto Vol. 2
100 Puerto Rico Vintage, La Isla del Encanto
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 0xffa15fb61ed8e9de9cca27b99d3cc7cb210d56252800e125d0b3ee53cce19870. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM7281586663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbc54620ebaa399fd01f8f8804344b0248aa565c71004adfd1c7c49ffe4384a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM7281586667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15030d2de856edf5683616f15adba065cce202c4e66a47d2acf716f4feeb4499. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM7281586668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acaec95bdff8d44c9f4b911ee068f5760aba533604088e70b4931cbaccbed8c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM7281586665.
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 0x550bfc27137c741cfbdda187ffb9bbfeb6801945a14825d270b6e1bb4bfd01bb. 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/QMYW20300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9b6df64b20ff95c44be283a71a84119c63917f60459a9f0d049a1a5460a747. 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/QMYW20300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61506e92282d73655cf5d15847b409c5a065f585fbd0c67ebc79d7fa16c5b3d5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMYW20300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc66c299d85ad4b390ffba0dcb4b5f729b0cbfb4aeadb3d0a327273903b3137. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMYW20300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a191b7150e02bbad5a9789f282921ce360bc211b8896889b6ba943fd63ed2f0. 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/QMYW20400683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ee8e1164088364d16eac269da8fdb61287fc9834bb58358754b4cf8bb6456c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMYW20400686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb361b46db282e0a0223faa0960451697cb0c4705669821c756dbedcd7fa0e9e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMYW20400692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6fdef271f044435a735268d95e64db07921916582eab3e5353969280d474f7. 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/QMYW20400694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d4686b0688854dd8efb50de261aff46ee058df22df280b4b2c178f7b0d5849. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QMYW20400689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a19ff7400c21b571730b723ee9df9fda5365daf359636d96c908584efa3784. 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/QMYW20300492.
El Que Me Robó Tu Amor, Que Le Aproveche - Bolero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93f5a0dd8f15ac2680352b8a06f810b0834c83bd5e5b0f71887f7ee821c476. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMYW20300495.