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 0xf341dd718a0d7ab04c66c7590887fbabed959db008259c371393b004f844704f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5dcc6dd-3f1c-4c61-9ba5-e81b935edd1a.json and https://artists.proofprofile.net/proofs/artist/a5dcc6dd-3f1c-4c61-9ba5-e81b935edd1a.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 0x971af53c67247ba34021558d6f2ffdd282c9b67bee11ac9d6e87153d7c4e6564. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/IDC308402691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a089204f030dca727957f9dfeacf4415cf33691aecbfdbb2c8beb3a3bf7e20. 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/IDC308402692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b455b494362a5126ef237550ee9f4d04de893d781b420105b01298ad76c997. 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/IDC308402695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42751aaa33660b505d4e68279a395a0080dcc3724aeb7f22e285c67757ba8861. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:23:09Z), 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/IDC308402699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a66172c576c854720a98be7c64fb6a48d8a95e7f1b23a3ff64aaa0131b0ad2f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:33:25Z), 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/IDC308502702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fbb35f205503d20e55d2af1a93022949a0488a867e3f1936806f2e566945cb. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/IDC308402697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e663259e549e9a8d90af640ea6a30492b65c8696a0f084ecde9ef4ef6a34cf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IDA238548108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10db54af8601a68daff0302fa7390e6f0c54ce1ed78e7bd06a13b1d937884293. 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/IDA921900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ab17565233fcfd95828b5b20fc06668c493ada631e40b21f2dc026ab734457. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:56Z), 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/IDA921900234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4c784c44c342c74ada0175c5025eb9983c45500492278b6e095310a8e79135. 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/IDA921900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36465dfe023000c9de966bc4d9e429ddace776fd7ac4d5a22d4c7b4e9eda65c7. 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/IDA921900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbe93b62ee09d06fdcd6683b3ce523a898cfe679b0824110f9d64ba7a11a94e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:59Z), 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/IDA921900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9efb34b6f0316690c79176457dd3f4447147890f2331be932085e1b0c2f36f7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/IDA921900241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d3f4a8ecb01d254e078436e789aef31d316b8afcda0a50d3ac595a843eeb92. 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/IDA921900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf16c7b1e11ca6fc590bf2f821e568e22171a26c7e2e673a987a88497eebaae7. 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/IDA921900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03402afb650297a2ee531cf69ec02025fdc866d4a9ed7ecb967a3768c8694c46. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA921900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d23d90aeae0959e1b62db3214b1ba361854a5833cb5ead3534c02494cdcacb5. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/IDA921900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062c724873e7debe2fd3d0d56bf4ef60a69e06d9407f78be089694777249cbb7. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/IDA921900218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe65108630922145fc8f2c15822a78d04ba20baab18e92f68e53511c7cf2903. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/IDA921900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e8932ffe0958d24d9aba01ef9ad0f534662a2c6d407a9d427cacf6ae9a9c38. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IDA921900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3076b5c25e1d2786ad3014c507be3c2eeec9b878f3ac2d5817b642c30df573e7. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/IDA921900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c453484b3ef85fe0392ab9aaaf6b521ab94e0753ffb60b0d2cc781d498d121b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IDA921900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f9055351dfae6a24cfc4330f37f6c0dc732b9a27923f03f2e35be13416ffa2. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:04Z), 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/IDA921900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc869a97497ebe2e9cd0dc9401a1bb2fecbdcc620bd570dd5063146772f17df7e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:39Z), 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/IDA921900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5dd2101de458b9fcd8e41c66bf9ba2556e14e27fb7468abd82f90529401eba. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/IDA921900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163d9a1245ce8d0439833b3fc76a70b0852556759c65d6301ce057cc00f4f340. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/IDA921900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94340e5e7307f5e11c5237bb4a177349cad85d19e16c5fdf420a8cdb5b0608b1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/IDA921900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda158c109910962bcac29e69c7beecae206983c42d56df110b11c57ef39b26fd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDA921900248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe274a57b079048e4f8aa55a895fff651e26bcdc2c0c06d2aeb3e5da5b92146e0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IDA921900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e016724c56a445653193d7dd1021c1c4b6d57427b249507c583b7ce2af97eb3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/IDA921900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019240c31a249540601b0806f8c130f8aa13fc853489ee88fe0f0be0fd183787. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IDA921900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32e2bf1f3fd8f63ed35f016054ae7162546a42c90b66d6be532d628800e77ae. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IDA921900256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01e805ebc3127a9f4492998843c962331ae1f0eed2f27eebb4cb7c825d3b938. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/IDA921900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0d7ba83851b1a2ab64d0f96d39346bb1f8a4feeff099f1a0d8c732580ab99c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:11:08Z), 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/IDA921900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a5ade3788179ae464eb7c3799adef53648a5140172c977266f45c7f7fc9f59. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/IDA921900264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932ff406f019a213c80e02220af242bdbe761f8435c8dcbdcd30849e88fb1fbb. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/IDA401502262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c8d02f9f81a8dea0e383070ef770dc66078aec0774d858838b6fae9bef507f. 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/IDA401502266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9196d5692fee1b71072b28293f1682a033ba00d2e74133f6d299d989c61a34. 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/IDA401502267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f895b0e249a039eb5b6df9d299e99c73e9510358c3425e42527d891f91f273. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IDA401502269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8ef038331b5ef041caf29cd610fdfb9becc78fa07cb8d83c66318f86c56a2b. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:18:18Z), 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/FR10S1530401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881ea32dc31f11fd23224fd3810b386cf9fbc674de965bda8239ae743e2b8c03. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/IDA250800702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81b3c86d05892325d15a76ac36dd9a82fd9ad436be76324420a733a2f1909e8. 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/IDA250800705.