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 0x7d65ea3c72c0d2650b6e389ea98f14c8da78ea569d3152927b8f5ac6c0d3fa25. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55cb59fd-9192-4df0-99ef-f1bd1f02dfe0.json and https://artists.proofprofile.net/proofs/artist/55cb59fd-9192-4df0-99ef-f1bd1f02dfe0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Evita (New Broadway Cast Recording (2012))
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 0x371067d1f2a76b6211820e4ee2745a3ca999b5600a93a3d09b52212c5db4d182. 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/USQX91200794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114f8a505464399c0122d48cdbc9a18d4bf959ea58503dfc17fdb4b142a1aef4. 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/USQX91200796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896c3bf9c07fb80607663f6e1eb779b4dd75bbcadf1afd08ee2c8034b1b8f209. 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/USQX91200797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ef11c85a2bcfcbda7e13c87bb9bad7bbd9796d88bc20a69f406174ded9a4bb. 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/USQX91200798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13510c0c117d6cf462d37d92e6c7a3ea87f8884b79a876d2496485d9660c9a2d. 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/USQX91200799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ad20ebb5d8bdfba8d4ff0b67f797814593443ee409db7e645e5119ee04da84. 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/USQX91200800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37417a1a0532481b61b09f9b966e198a23fdc39b92d7e0f2ea3a5a86749d5c67. 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/USQX91200801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0251fc19fdf33f91859bcea89946c57379e0964c7b72aa423e87fe27232c77c. 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/USQX91200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6463b9373d9e994bf235ff314a34a8a0d9fdd405dc8e9b559bd09fefe25729. 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/USQX91200804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267f733f7dedc73be79d4396224b075f0c84fa163961832b940614a22f9f10d7. 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/USQX91200805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362a6aa9e91a03ddedbefc52e9522e739c4fd51038a1b3a99c95102c0ec2a79b. 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/USQX91200806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd51f70a7883b7c73f3ce131ed53a813bfd6d5b8dcf6f66545185688a091fd43. 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/USQX91200809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514fcf9518ddbd5d40118d654c31ae008cfba2411469b4f05f74236e7ad24e36. 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/USQX91200810.
The Chorus Girl Hasn't Learned the Lines (You'd Like to Hear)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68aa78be639c3b6e8d80d06c2f0376cdc870c982d1407c38e5eaa8f2d3a7e29. 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/USQX91200811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5534acdeba1250fe81a860e44461247aca8a676ab9fab1d82932df5f5fb815ef. 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/USQX91200812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aac6894572af8c489b6e1b72b2e1c2656af0db0119990163f41e1a8f0026638. 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/USQX91200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa744212813794e5d21f0eef54a47cfe9d20b2bebc773961e6211199db0666398. 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/USQX91200816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee359e9240b818e569dbf016b913b2639b7326de041c8b6e38d212943bb966b. 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/USQX91200819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5662a6be008fbd5dd5972fb3f832f603662971dfc5784ddcbd6aff3c997d937b. 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/USQX91200820.