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 0x57a15276f3c09f7ebfd9fb2078f4e093b663a229a01786271467aabcd5a31d46. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/080a822a-9a70-4fd2-a2d9-d385bf4e3515.json and https://artists.proofprofile.net/proofs/artist/080a822a-9a70-4fd2-a2d9-d385bf4e3515.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 0x5aa4501d4fab5f9a85e6dc2167a0999ec6444d88ec2afb02ffd6071ccef5ed80. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZDA52089486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b21b1869e3bc465600ec3dc12266d537067e1ef77f6551d67ac23266d25e3f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA52089487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899b1cb599cb92a4971b2dab51980c44d4b3937fd9287d22b48f726174086613. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZDA52089489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6008a1e76477461b984beda1db0bb521f94f627dff0d8a7239499af41d343c66. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZDA52089490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f728d59d43c4af0ad72e50146b4ea3e4de839fe64bc1dace0a18a7b123e6d37. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWV2197301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73e34f66831ecbf41f0966994a27db5e7133548b20e10dd1b7096bbc4d5df94. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWV2197302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a4f6a909b149c7b64871cc074ef7576ee3ca932663c3594c7268921e22ff2. 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/QZNWV2197303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dda5786a0597006ff7b2900173da8b9204a25ae3819d207ae85486f9c953c85. 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/QZNWV2197304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ff7b1c41486e5b7ca4174b3a198ca375e3cc045d3c08a4a37e3127d7f66e2d. 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/QZNWV2197305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1d6f046fb57367de59ae5094f7f162c4a0e4e02e3ef2fec7f61c00a06ab96d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWV2197306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07199c480a6c82651c44a98e4317a5a741a78de80b969e36cfcb314852416074. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZRP42129487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46973fa3d78892d03cae5ef67cb6c0886f756c068b9a4368ebfa4ceb7b965df. 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/QZRP42129488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7078f6d66cb425b405a3de022df4b932269eb3c8bb158bcf0295ced9d27c690a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNA2263754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27436d276f3fd540572400bd91bbbd99886c2943c3c83c6d3aafd3fc529e5bc9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHNA2263755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47c5bab8bf793113fb60f756553b8a1334057feb509c6d2e01d748a89cd736. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNA2263756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3a893e898e7f280d972e74ab8593ef4c0a266def18a840ad3802e7d8f60e7a. 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/QZHNA2263757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefb9d08c4c3ec42726544be6a9451602da0bf8cf498c75d9132c6f34d9bcc63. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:36:25Z), 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/QZHNA2263759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cf8228787458fab9cde126202c9a22c3abafd989ae5ccf5f840793c14d4fff. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNWX2298399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba6910eac75150bf3f4196b7be37f5b9e3e6ed48632919388196790757d120e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWX2298402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d365587ece1a98f41be11e05c3b2855337cfdae992c3f898b1a54ce30987de8. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZNWX2298403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ec75c7e11e0176e11c71f66970864d81260201034c142e8a4a83866ab237f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMER2332550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb988494760003266ad874c4889076f4f4f3c04ae0203a7a2105f2cc5b158ef8b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:47:41Z), 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/QZK6P2240149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb8387e87c30a4c57b682633c38a9cf28aff14ca2070c1184b0b6b856d4cb1b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN82293817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6babfb251700e21b18c40d020d7b19dd8dc9c0176a280be8b15df0b896ce756. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN82293820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1836e2b3be472c5bc24d6e8fde4bbba45a46eb311f50a94bb2ea7fd5f52d08c5. 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/SE5BU2493725.