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 0x64195fda1581e8fd5966fa75f1a8abc2b10676484a8c846eab823d1f09f180f2. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c6c41de-e45c-4f0b-bf4c-e65b354d4010.json and https://artists.proofprofile.net/proofs/artist/2c6c41de-e45c-4f0b-bf4c-e65b354d4010.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 0xca6c992f614abf3e29b78c55d1dc55a4b8135cac42bbe06852d3625489294abf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEYX82241846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540f4b02325088ca1dea5eea055f65e8fd477c6fe0ebd8fadd59260ac932ce79. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:06Z), 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/DEYX82241843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc46b67572097265465356c61e6868fb36e98e25c07198a21c199b130907ea. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEYX82241847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e11b49636bd324e7aa17fff3196c1f91877f17baa8f1be84a6a4125efb1dc11. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEYX82241845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4997e3c39abc5e43388a992679125aaeaf706d2f3f27a1fdd67de0b7aaf06d6e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEYX82241848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf669f537729bab759f2067de6d96bc147bef7f3265f75622b12274a20e72dd21. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:12Z), 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/DEYX82241850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90e72eb42de22b018c6951f20315d64f6d7e7d8d40cc9fef9cd31be33bc94d0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEYX82241849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea0d91e04f22d7ad6bf8a727aa130d13f83278b7c98e9957b53dff708a8997a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEYX82241842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cc4c7bf77ed2d4f60b4faa6dc523ca5f57ac0f30d19d27a9ffcc5aa4c51e6f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEYX82261053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38d0ab29674e82d9d838da1c592bf5648f2db449e2edc8b657ae9fa73d8725f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEYX82261052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acc686a62dcf29970413f235e3820372786a68177213802eba1ea90538e95c7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEYX82261058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167880aa61649dda4c7b6a082e55cd82d18d982319cca23e0794a4e0de2e432b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEYX82261056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa016cfbbe2481ca8e66c3fbb7af18b8a2a3011cea30fc2f3fa6084318d95de9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:06Z), 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/DEYX82261057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86802f0ef768cb90f53297f6d1398d336e962c3e322e5fbfd7bd97420c612602. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEYX82261054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eae778672c45dd18d6a6a2b415ccae0518f31701ee9c2a51eb68c73d9d8cb0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:28Z), 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/DEYX82264453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb11125a054919391efb494dbe3cfce1cc3f2beb0df330c8704bcb92a1539f9d. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:35:18Z), 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/DEYX82264459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028c5151bef72e26b29199e514236ece6452c48ed648241cda0760eddb7ce8a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEYX82264457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f22659719b6336a8866c6db613b316fee796519f7467094462306b3d7f31ba2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEYX82264454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb721698191dd497fcad79bc2ffa217f3bd2cff9416b5e99f197eb8d4d1cf4c0c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEYX82264455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cea5a0973fb112816642bd431dd0592c671f512ea234f9cfa95846cb1002230. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEYX82268005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e71291a24438773fc46c6e9eb1293f6b12a4fe09746d135a8edbb0373b0a13. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEYX82267998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4517df55fc62c1c7977d42b8fd4e3bdb9b6facb30470fb491d2d9f756846b9e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/DEYX82267997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07d04fee576432d99f1c49a979a7e1209b24b04c370d1f865e0653e0d0bb586. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEYX82267999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b25a35638433bdb0e676b8a550193c34f8b0c4180abe3621dab97ade33c2af7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEYX82268004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27c817afe9db9f3db7f27e5f3c723b8d81cfce6a4d8a2f6a58bcb72db0cb970. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEYX82268001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052cf6ef970b54af1661f5a4ef8deae8a5d9b41334e0f61b3f9185e7b8424608. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:16:53Z), 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/DEYX82268006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbcfe40e4d57f893aeadd6afac2a8e7534dcafbed9bd993e2f3015ea702a400. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEYX82268002.