1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc0a2cb7998ab410f7676962b17c5fd9b83acfd3b53e129e425509050c015cf30. 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/ea4c4fc2-f73c-434b-81ad-055582a15b68.json and https://artists.proofprofile.net/proofs/artist/ea4c4fc2-f73c-434b-81ad-055582a15b68.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 → block OTSBitcoinBlock must exist at that height 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 0x73c2879bce5575c4e48fbd78274bf1680f3999b80a0edfba345720e300183251. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZRP52319125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104bd629690b0a92929f7a73e95358b57e991b639025cd71e02202e22cd764b2. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZTB42339285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b5f88171819eb9e28147bb434ca54d60d03156beb2b74e8629eac71310635. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFL2378809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f68cdec2adb0b66ca2b235fe22a0797a7c27ade6f184fd6b33dd64bdaed0599. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZFZ22482465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70ab0656f16cbdf2b5489a70f6964704c7f248a14c6e04f0213678350088914. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZES52489657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043c8c553d173867eb36076195c1cce6bab23a7566cebb8f07a5ff5d7aad666c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES92416210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53c71989b6997e048cfa5300fabb49d0c3a090217e94604f7bc38a74fcb00b4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZHN42472834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567b8ba07e01a1f6911af53a13226309bf9f90326da0fb12eec82446fa1b617a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN62402861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61989e16f1aa7d872febc3dc773634f90bd2b2d2c84215480d1b8ee99ba3bd9c. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZHNB2458883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0407e347f038cb3099a0da4c2ed479e6b04abcb59e964eaa1c81ab24fb8adbaf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:03:09Z), 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/QZK6K2469310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e43a561cd7c77a856baa02a8c85370185b7156e7fc7c5ec9ee8610426f58cb6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNWS2495791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5568a1273f6471d43d003f71099a57f1fe96a7ac14954a16aa486f781c70c6b3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:45:09Z), 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/QZTAT2427230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa64f021e4be6c47329daa9bbc380fcbbd76a01c870b44b677fb370d2d366022. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZWFK2453822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6684ce61b0e47991078d4e3adeec25509de843fe89725b157acc601e2d786be. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZWFW2439005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a337a9c9e5d47884e92925eb83cd6955447bbac608773013bfcaf204b900c2f. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZZ7P2437274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84868756bfde933569acdc61595a3607993e7b817c4ce3ca61607f702817645c. 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/QZPLS2491397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3577774bcbe1eb8062274462deb46c2f9e904c9ac2fc911d6a4aa86192fd009. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFE2349897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53c71989b6997e048cfa5300fabb49d0c3a090217e94604f7bc38a74fcb00b4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN42472834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8836b6f96d0f3dad3725a2d556c2f5d040c77b0d3c9e332661c08b9228b8644f. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZTB22422778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043c8c553d173867eb36076195c1cce6bab23a7566cebb8f07a5ff5d7aad666c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZES92416210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a337a9c9e5d47884e92925eb83cd6955447bbac608773013bfcaf204b900c2f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZZ7P2437274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507e8098d6d9ac112e1c7bed7a4c01f4674ab5b0b71f9d235b9c10b8776d243a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZFZ32559707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccf01906136b26b3dba9878a8be939237f14057532d25b2a396d29b7f99c936. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZFZ62574180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd93f84a6299e50d8fe86ef08f0000f9ddcc1789736aee7ad16cc565ebda1ef4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52529427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4a4876a6f3d48f4af385e963cbee949f912c7eb6a9cd9416e06ce4234ff1b5. 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/QZHN92563387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8127abd32defc0c22568896381c26e5f8b90e26a0640e8120bf3c32a3b7d99a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:39Z), 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/QZK6M2559306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143f22563e05b84bc247f8613aff770062c69af35e981d0346c41e4a6aeb68e1. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNWZ2546773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bba7355c004b00d6afad91e62824d6d1d7cef559900e5eb136ff9329f17e15. 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/QZZ762594703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066524c03596cefba2d8ac586ac394c06f52ddebe8598a6fa3d774d44f8c04a4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7T2581887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf031ac3240ac9404625a9745a7b81e1828d125750ec6af36591a143ca69ea5f7. 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/QT3EY2559614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8937e03de4e59a949b96797d80a5b0c4e3eb42cfb925b5a7d06090eada1e9f62. 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/QT3EY2563101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bea7adddb8db1bbcce4cf7e4c4c7b900bb935cc8f89310cb1ccb77921cba84e. 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/QT3F82557685.