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 0x2c9ae87f9f8035570a6c595434944b967fad57c2452ff51c94fd36424177521c. 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/2c73326e-936a-4b99-8247-6d721e58e4fe.json and https://artists.proofprofile.net/proofs/artist/2c73326e-936a-4b99-8247-6d721e58e4fe.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 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 0x481ac146eaee2e4568324bc9a535dcd9528b72de7cf20cf473ae4e9284a528fe. 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/QZWFK2376974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63946804801aa9d83ead68267e2fdc1eeaf607d7812e1ef8a2c2bc7814a4132b. 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/QZTAW2371453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d5859db8209ee4f3d77fc205fc8064f6c380ac10ed17660189547d544bfd93. 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/QZNWS2386081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06f8740ce7ff3391a0966ac2d310ed10615835b2e5e6f58d0c8f1acaa60776c. 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/QZMER2322253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416adbfc2c361c8a78bc8ec91f73b4ae237ede8cfdae9b863093a49cfb05f4f1. 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/USA2P2313918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16683034390c281cf5d0d524313bfe6567935be75c613600ff3c8533163ad745. 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/QZES82341188.
SIEMPRE T ENFADAS X ESO T DEDIKE ESTA CANCION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb1aa25ad8bb118969ee4a9f11f0edc8e8034407f2337596d6bf98231a309b7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZFYY2322135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf051923934e3fab8725d0bb16378ba62ad73beeb31b747c24551dc6c64cdeda6. 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/USA2P2244268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769a2ad71c122c877060ff690aae99ff6e28c659ea63ea0e46ab58dba4348515. 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/QZNJX2350961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab208c473c2e7b2780eb21f08333eaab73639e629f36c57b028996fbf58232c6. 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/QZNJX2350962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16e41449c815afa59500a552141b5724c6aebc09637cb8cfaf30c560b1f1906. 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/QZNJX2350963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eded57aa1b49e3b3ca09fb1448e60aac99ebd5518dccfe65090d0717b7333cd. 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/QZNJX2350964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fd956b297d1c6028e4e8fdef07da51b0ddb7c445b71e6cbf8a2c013b7331e8. 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/QZNJX2350965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0df17e29fc8652d3c9df4e5ed4ff33c43d6d1ad2f850ae90e278318de447f2e. 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/QZNJX2350966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c1bfcbe1e99a4c05aa68e75067b6008e98a4af14ac8d6ab27a0bda2bb8cbf5. 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/QZNJX2350967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c41d5865b2293b17f0d8c3fa29bd749d234398798908eeec25ee0753ebed9c1. 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/QZNJX2350968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dd2ec3b0d6d05949553f43758df02bcb74550442c21143c4b750336e7b7487. 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/QZNJX2350970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe020dead88a2f609f9a332fbe9017bad56ced6049518e86e69a333eb06d13766. 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/QZNJX2350969.