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 0x9d01ecf59d4c14c33ba5d4690fca98f5b1ccabfe33a5f106acfb2f91ee221535. 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/3eaac69a-b6a9-4fe7-bb4b-9c42b220f4d4.json and https://artists.proofprofile.net/proofs/artist/3eaac69a-b6a9-4fe7-bb4b-9c42b220f4d4.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 0xc76903df17c46675c6afddadb018e9df23ea0ae586b3b94b807e410e36e57d47. Chain 2 (Bitcoin): anchored in block 957242 (2026-07-09T01:00:33Z), 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/QZZ8B2370112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a3cbe741ffb3acf760d8cf74a38c6c3f5cfc0d7a6bfb227a18e54320f0fdd1. 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/QZTV32366660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9719df8a859f9dd0d1405b4011e4a0bbe5d18c004be7d3cb022f7563e78332c3. 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/GX8LD2208290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69916bc87885ecef323a04103aed0e684d91d3a6bd1a06f62449d0200323926. 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/GX89G2203038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1549243ed2cfc3174255c16b2a5a887e2adbb85fd7eb75f7355e51e3e49a0bf. 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/GX5MY2225082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe691f9cd39a7dc6044a55a09086d5aa63e642a4fc86bcf0cbd9de56cee1ab958. 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/GX3HH2171368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f68603a32bafcb9f94af18a7e36cc3b903695175752dfd539f2b2c4e1a72415. 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/GX3HH2173728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df695e0b9db6508ac0d80e7d2911df73154609099d014a30587c4c487ceb2e. 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/GBSMU6410724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd245abf979568bb18d13556d4510f8e93245c90c539d643e76524989ca661221. 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/GBSMU6149775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9480bf03d54bb54de5db23caebd7e1acdb571b79801400d20da33705168ae4d3. 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/GBSMU5639813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05497c3495c5004812fe265000bf928aa253139875b0a24bc3e4524a515c9900. 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/GBSMU5639814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7976636a9486f96cf1775ffe689e24d32ad676f99c60b5113371b06caafcda3. 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/GBSMU5797413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c3ff1f685ce99ac9393a5be35269ba0fc5b92a5cccf2f1f6e2cc5d9da1e14d. 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/GBSMU3657765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc6295f0d6136cf0268a8f01563512aca14d963dc3bfd8f763562c7b71e247. 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/GBSMU3890195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4aad3978d17d91c23404d48379620d02d3fbbc35fcc68f28dd1b592aec3714. 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/QZTV32384846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a56f2336d446958071e80390d168666c877f87d73ad3cf0b08100d3282614d1. 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/QZWV32599679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865d4509f529435cf43e4039e47b009725ca22580fa70f6077c66b739e64e478. 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/QZTV32546761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c31b9dcd967e9fb93678003636325d7d776781585c420bcad8596412184cdb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USLZJ2551880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09f0cecbf54cf01fdf816a39ac85fbb69f31571bfeaffc4c807d1622befc39f. 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/QZZ8A2493310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29f317ae82ddafac938ed4ba7488b16b7133adef3c6d75e8cdd006aa94905a3. 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/QZZ8A2418561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734d64035affa97033dd9421e277aee1b4d44c561d9f4ceb4a3d0b9becb9b771. 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/QZWV32464447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab20089f52963d4570b3cb28eb8278d5961e5bcfa71287d5f08f24577fff2f. 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/QZWV32444944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab20089f52963d4570b3cb28eb8278d5961e5bcfa71287d5f08f24577fff2f. 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/QZWV32444944.