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 0x1b2640433d74f8e2422a6202b7cb4b5ab70b60e7dd579758fdee956291406e8a. 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/f3f5cd63-43aa-49fd-8d98-613da10b4bd1.json and https://artists.proofprofile.net/proofs/artist/f3f5cd63-43aa-49fd-8d98-613da10b4bd1.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 0x6f11f0b393e8df155d1604fd785e932b466da392a00e84ffd23ba07ca2df2ef2. 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/TCAEO1964624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972e0188249de07bccbae12e816bc5fe65354841adcf5b28569bba3ab1cf2e5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:06Z), 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/TCAEO1964685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b0c7829fca5487de33c6dcdea9c8a5d10b723f973f7a5ce44bc4aca3433eb6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAEO1964717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871833da355f4d36bae2d8fd2546a1ed9807c32a0330171b8e1627b3414f8b2c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAEO1964734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc363477734b8bb8448d518a3e619f93d34b77c4105acb67e152e6fe1822f71. 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/TCAEO1964754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683b5d62a9f15f1fdda3b0005280562db5bd0089f1dadafe728d714c7bf3edeb. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAEO1964760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1ff066ebe369c5da5b976850aac12078689b0dbceb952220cd605a2ed60ce6. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAEO1964761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7d6bc718385dfc5ce1119c3cf0e10c32c2e5733c3339665e35bae396f8b2ee. 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/TCAEO1964765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d71434c291a7506337d3e12ce76593c0a8f1900b99c67186eff83febf675f49. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEQ2052769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889dcb5dab99cf4f3eefdcf4daa03294eee09ccdefc8c627a6ac608dd108e0d7. 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/TCAFQ2166763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f45c5c3bfd2e9d8667a8ad7924a62301fb207c6f66d949b374be9992098e7cd. 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/TCAFQ2166932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aabf035a2b1e69868d80d5d4d88bbb506e2eaf015927fe22c1406cded02332. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFQ2167058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaae4e9d25457e65b8c09754858c1f14b6f5c8d9a9662e17de04c87203bf3f60. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAFQ2167095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c06969775a5b6ff5be6ee65aed262856180053f7a9be9dbb2d80524e004430. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAFQ2167181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3ccc436a3f3ca885691ec9fe52eceb128476d0feef965b86c03d2b9139b16. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAFQ2167207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4249d95b918164c6f1690a77206a557466035d5a227fa7c7168ddd5725cebb9f. 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/TCAFW2161141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc61a1e92819c454ba4b9e1346cee9884be9792b5831b1113ed4d41ff07ad7d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAGB2295161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa425c0649f6c5da9bfb3bafc4982524961b8078ade3b1d25e0ecfb9f4d4b7c39. 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/TCAGJ2271672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f300bce0103d3589085c1254efb296ce61c3c26535f9f782962f3ffa48f3f3c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGO2261031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58663c00aea686a80bf03c55b606db7d8e99f62555f26e04546b3c27fb59ac84. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:48:23Z), 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/TCAGO2261041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b6895acd9ddcb4a29df89b9e6acfcd2141f91f2b7a61acc942f2b4114d6352. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:36:21Z), 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/TCAHB2307547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f702b142ebfce48c11ca6f4af7598aa87af8a93b45bbed9d4541e861b22ea69. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAHB2307555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35ead01a2e8fe5dcabc1e27d15a85ebf2a521617b69179ec0f07affadec109e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAHB2391006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eb084b7fb89dff758786d765d31e7484e1895056819573a9e73b7efa2428f3. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:02:49Z), 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/TCAHO2311438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95daa7e39c03a3757cb93cf2cdb7f2f198d2cfacd8fb0fce7f7c380bd4ba1e19. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAIE2475289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cab1b3292023e4fe6b996ff17992e58cdd1e2a28d6f5e0df13c0e00f853472c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAII2446458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6abba1d31ff064c5813d26f67a1c9d59ddc8f28a7a936843e3b0e771dc996bf. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCAJD2482530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccecd0537639db9f65a311c19cfed12f733b9999419caef25d51b4e8bd1681f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAJF2544744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544cd0a6680df288a79e14c98ebe94c5d7829b0e4430ba0a5fc2088d400161b0. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:18Z), 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/TCAJO2549029.