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 0xd25358e1683465957934fe4d5a9ce40a21293c5977b4932815c13b561db067fa. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6eaf44a-244c-4438-8821-5054ffcbbf07.json and https://artists.proofprofile.net/proofs/artist/b6eaf44a-244c-4438-8821-5054ffcbbf07.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 0x5e5f7c3f2104fb350f1ff68bf8dcbebabef090a31bbb5e29b9c8ff5543ac4fea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX282035276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7844cf10978b2c0eef2cb45082a0934ea93e0b550d1566ce600e829ac4c4488a. 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/FRX282035277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec828059eac42a2b70793f1c9add77ea6dc905f9217cb8c41179746794f11ea. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRX282035278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0218509c9c90f883cd0e0b435562f2c77ca14c3fc01c7d0bf43fce0851db940. 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/FRX282035279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa82162be82e23a9fa965216d31fa5fc57b2ac0302b072f2c0d444faaf96d4b1. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/FRX282035281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa70773c80c2ae3e9cae3a8e0eff522215159c69a768ad3e62a3e74bdb4e160c. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/FRX282035283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1598a11bad30b070147753f842c74e138cab0891c36b6df535e0345a1fcd1ab. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FRX282035287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fe70c444f091f4cec5a4eaf77ad68a058cfc2f2d3f3bc20b20a9250b72b489. 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/FRX282035289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9e8dc9216ff010884186acc9e645e19e2558a2034c168c8ea15b20bd12f128. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:08Z), 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/FRX282035293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d68b44dd489ce58a16117b8f1f9ab5c09d918a9558bdc23046a5f58639ffdb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX282035298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4e2053f4dfd206b8e69732a1bb2031712e35eb1d4686502a56588600894557. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRX282035299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf15ee0e2760aa1dbf3e87a7747a5724aa6527b86802e2c906cf1ce7e976516. 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/FRX282035300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4b823e1bebdc0c8913d3088130b9538e0036043d6b4bf8ad95ef989d7b6c49. 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/FRX282035302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c803e7de9967692e747d96a3ce73c78b959fc04253336af7c3a0ab76bb7ba7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX282035303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf320eab8a6f79bb07b453b54806c5cf1447700532f331d18855b0e9f945b5981. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:46Z), 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/FRX282035304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4a373e4e9008c6b0cdbde2255c2c78ff93f009a0dc98bc9b061ba55fcf2c05. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:21Z), 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/QM6DC1559252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5668fa3608524b2cfd9b389179c4b8f74192fe73dccfdbd16db8cc139f191a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6DC1559253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a31df1a1cc64f95c290c3d96885b22453b94ba630295ed5531d76730d0438cf. 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/QM6DC1559255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3812504f3f0963b13c4c02856eca444d55ae2c39cdcac05be99ebc30139567b. 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/QM6DC1559256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58246c2c9f254434a1d6896b590bb42e02ec73cc106cb0bb69e8f1eee11dc36a. 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/QM6DC1559257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc0467797114c4b9a535a1f6950eef345973e6ccfd1bdb9955cfc4b14c89873. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6DC1559259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779f78d0008bed5ef5f7012a4cf93a9b084f395bce10442077807a5716797cad. 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/USDXS2512773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b13a7eeef209c5e3db46480388d92f941415226a09dae04746309b2f9a8adc. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:03Z), 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/QM6DC1727274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f45258ffac2bb0560365a5bb9da9190e0c395345c47cafe5a172fb27fdbfcc. 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/QM6DC1727259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd716da3dabd9b88d241b7bfbbf701b9d5434c1ce1f20697dbabdfb7774c060b2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USDXS2512775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f377ebb014993734182a0596d532f29035f1637659a09aa8228fa28830d2aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6DC1663394.