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 0xef527f7a0aa693c19ffe95de2ff4430c8bebbc4953005da437bb5123dde3ff5e. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cbf26b6-ec10-45fa-a466-ca08622baa75.json and https://artists.proofprofile.net/proofs/artist/1cbf26b6-ec10-45fa-a466-ca08622baa75.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 0x423ae2324d29db12529b9eef267df29d1643e8aee746ecce755a699a5748743f. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPW462445688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e392f8ea1f3a6182668decc4cff02e4e8c66f015a17814a7f8b278c5c8e4b2. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/JPW462445689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1762a511c962f7fd6c54620bf9e5f8f9de3cb3a9364ea1fc19bab5336e96cdc8. 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/JPW462445690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336bc61b88ff69051babd24797e077710024f2249a8d2fecf802e6fb475a386b. 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/JPW462445691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e881ec724e772413b387e24c0bddb7f6247236d71c90ba3437c7f718f0809d5. 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/JPW462445692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f581092006e606d13ccfda6c7ab360cc9283c41061a9344b029a53deb69dc3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462448711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c4023200f5b85b3bdd70e8e8c3a278fa1e905ff5f39d8adbc6c452cd670eff. 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/JPW462448712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7feacb70b0238bafa4e643c90642d4a75bfd9fe589c533dba4d8db98f55fee9. 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/JPW462448713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba48ce6324f5e931dfd25d4217f2cee2a158e1b6bb276f68cfa703de588e26a0. 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/JPW462448714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e27b3e5a5e2d563b0adcec0789983732cbbe12e6b6593072fd5a45e02161f9e. 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/JPW462448715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c084634f4ba618bd7655bc8b60f00802b946487b78d5d553de1a9b7b68f5eed. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462452435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9168a55e6456f44ca5bdca54c4aef0d79c5534f1c1c3f8a32e5c8ce8e7fc39d8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPW462452436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c47531e76896caccfe9442c5e2f7679cdb5571be625014b97c4cce8f801bf6. 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/JPW462452437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8e4d82a916d04956b170b0390f73c29019d9ca42449e83def6967c46496275. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPW462452438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348a170fec3195327eaa5dcca09eae0e3a1641926ada980bc919fc0ef82f9536. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPW462452439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0bb11ba9c233a18848bb3fe8ef35d8c421b72ec17e2a5474e03596afea5427. 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/JPW462458189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4e76c245d5ead33508438c12bdf3f11728b0987f26905b1e2feef86c8f450b. 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/JPW462458190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9ed89203e1387764f9a3cb44fd54d81e4a43df3eed3ff1c825593fdd364adc. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPW462458191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c74b2ff8e2ce74deb906718c1cc55d77fa449eca6c466cf55c76d72c8d28dc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPW462458192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d801260412a9a775e9d9e554c855c9c81a55fafb994b5ab1572d5cd1ccb1fd1. 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/JPW462458193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8349ab29efc4b1bc499b7f786e5ca520a1af515999a3b91e26c99da414fc5a84. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:55:34Z), 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/JPW462503274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3b440fc0ed9df6667c8f2f4d18400d101060fc09ccc34f55027ce8cea656da. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/JPW462503275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532c944dbc8eba14dc7eb2b978945f6eee8fc20e1cc268f58632548200671e84. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPW462503276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22dac80f2aeae58ecaa1f427fdd3eb06d7b46b19594dfbee0d3629811db4b7c. 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/JPW462503278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb35b9dc5f2d456ab6356954448290630ecafa43925fb78387dc67c7c9176f6. 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/JPW462578015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c240cfe0311efaf7852c614438be98b04684d0a2c36d585aec72b286b6df45d. 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/JPW462578016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f96ef46430b2a318980fef761f1ab7c38811ff29d56f82b9a67528af319e84e. 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/JPW462578017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b13a9e60b1aef245b75b51a1713c2263071e9ed5d0e9f3a9940000f4337d66e. 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/JPW462578018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cde1d97d5acd77d4cc61aed10abf8c7f5e7bf4fb393ae0955aa821fb54092ac. 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/JPW462578019.