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 0xbc83bbc923da1fbfa5f728362d3c8374e60690f6b3771746b36b6d4c0ca86227. 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/45b60383-d7d5-4952-aa2b-a20d96ece9b7.json and https://artists.proofprofile.net/proofs/artist/45b60383-d7d5-4952-aa2b-a20d96ece9b7.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 0xe3085a6395974aeaeb4700474b694c38978f8ad4bfbd8106df45ba9ace0cc0ad. 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/QM2G22000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546b5a005d687b4c10c3822874da1e91430ba77dcf9811f4e60c190e7d6ed46. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:32Z), 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/TCAFA2087715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce200c8f28170c522a44ca1d234847b1d3b10bee2239669eb7bc3320a241684c. 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/QMGR32272804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19be06dea6baa9db086e525d2d3192127b9dc7c71088e0296a49e9e66bbc4f79. 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/QZQAY2162417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b52ffe6f4618de3d2996de8756afbdfed148489b88a16e1405984927f00a03. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:22:42Z), 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/QZTL92164993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41eb7facc27428e79e995e90b0d49b660f892ccfea2a3de60f0854553b13302e. 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/QZTLA2271659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c305e5d974cc300b12d6c13a5acc14f06a3a9d31b85d57f0dc04bd04775cd0. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZQAY2293079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f8072b1ab61269cd756e323fed6d5c2e59a549322e699f4d561bc00ad72342. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZS7J2218501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1df5437945e5c3475843d97670c259e9614f6bb9e15317c32bae7bce320eb3. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:02:37Z), 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/QZS7J2279374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f22ad587b1444c56c59168ec677e018604d7b04edd4ab8bfb63f4d739ed6f6. 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/QZS7J2209031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06ccdb84311107da6550bc469daff06e2881be0e752560dc97c035c59f225b9. 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/QZSYP2252666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c6f9fce9092666834b821d43f160e42c463c089654daa31e45e587a631ba65. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZQAY2321053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274036cd1937ecc54280290e39ff4706c7ef692120dc2d53f84546e6d2b4512a. 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/QZQAY2376018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda33b3b9aa27e321f91bb15d58df59492425b2b5c917ec8f864f6fa2224e52b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZS7J2398029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd2cb04d43e46edfc8b2fbafc17aa1709fd7c7cd9547b46a320af5ba87f0384. 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/QZSYP2354971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8c11d7fe58461e56ae789e0689d30b8c9be7b6fa19416f30075b590da6ab83. 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/QZQAY2378541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c1993d8712a1c6513949b13a9793bebad8e12e7934037db54739dba695597e. 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/QZQAY2363966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8c11d7fe58461e56ae789e0689d30b8c9be7b6fa19416f30075b590da6ab83. 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/QZQAY2378541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda33b3b9aa27e321f91bb15d58df59492425b2b5c917ec8f864f6fa2224e52b. 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/QZS7J2398029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274036cd1937ecc54280290e39ff4706c7ef692120dc2d53f84546e6d2b4512a. 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/QZQAY2376018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2b9b01302bcd0db433c4da45a89b83a7b42fa878ed711e45cb98a60d95c706. 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/QZQAY2358655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eb5539569cc606b9b80fd6f7333905bb98eafb3aaf30ea7ccf55dec71120e8. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZSYP2371789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b51dc42d1b34a34756dbfee598b924aa824d8b189b0e9531c1c1f6a07ebb847. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZQAY2400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876e355c3c0bd1b99af234a8eb166ad1438c0ba3eab10dc242a0700d6725ab0f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:53:34Z), 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/QZQAY2489537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6451df06880bddea706462eee77db172c09b7753b97ab1e7622ad9a32faf0365. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZQAY2475368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106bdc52a0e96e40deb156b47312afe22566322e89f6f62d15ab7722805d2ab4. 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/QZQAY2499523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6451df06880bddea706462eee77db172c09b7753b97ab1e7622ad9a32faf0365. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:56:06Z), 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/QZQAY2475368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876e355c3c0bd1b99af234a8eb166ad1438c0ba3eab10dc242a0700d6725ab0f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:30Z), 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/QZQAY2489537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b51dc42d1b34a34756dbfee598b924aa824d8b189b0e9531c1c1f6a07ebb847. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZQAY2400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4044182255f7b165711075d48d2ff3a00ebeb799b8c70c06bb4e17c7bcb91c96. 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/QZQAY2551134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722d7e4aa8d991d6b17d74115db3f1e07d2c4c77fdf66a24fea37f555609d318. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:11:35Z), 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/QZQAY2579035.