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 0x2c351dfaa2b9f0f0e2c96779bb0e953fb80cd2c06edad0868618e0c04e27379c. 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/eb858dfb-05be-420c-9a9b-26f2ea1e818d.json and https://artists.proofprofile.net/proofs/artist/eb858dfb-05be-420c-9a9b-26f2ea1e818d.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 0x5be6a541ebd3582ae325c1c61345645b9801df29578c64f528c54bada89d7c6d. 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/QM6N21727325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90be6c275bc20236cc8af137797f38c8e165e9ba0e4ba02bccfcc06a87e514d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM6N21727326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1175fd92786d11ef928c9bb0779bdd08fa49121094001d1d5f84391024d5f1. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:28:23Z), 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/QM6N21727329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b8d49b7b72ea4e4b397bf9bb851d4993956ef54137c9bcfcc845c4ff6e03da. 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/QM6N21727330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376067ffdff844149530208c909cd89a5687f738f0ae2cdad26787e4e9df5631. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:49:57Z), 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/QM6N21727331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35fda2073d3f40715794961cecb6276ee6620fe447c92cd273a0025e70fdfdc. 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/QM6N21715524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3437fc43804a917a1a1b9b7c51137d0ad4d0c559c56b80a50790b8110edeee. 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/QM6N21715526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014dfa08198957e377f816f8198ea86b142f65b56fe2b8e67cc6b26e1c9529e9. 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/QM6N21715535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a132f2491a3d324e5d68a498020994721e12e1d313b8f31d7221d97a362df53. 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/QM6N21711990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde102decb7a64bddf1a6b6164d4ec07984e8e7297f7e0ac5130e65e07dce4bab. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM6N21711991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3640bfa613cb793ce167e816c096b6558e97ecb58b1e4844e80d2c8fa501f6f. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:05:20Z), 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/QM6N21711994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafcede52fb4d115ae51b220239ecca99554d92d7c6058ba3a3f739f0c931658. 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/QM6N21711995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbf95ff41c2eaf0e0eeff712674bb57c972aed47fe2b96b7d67c2547aa0e7d1. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:01:02Z), 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/QM6N21711996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04d7284724f8b5c95b90197fc58d82db4783530645cdb14277c6207a6893edc. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:41Z), 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/FRX282340896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd71c97473fb8e16265c10f7a6ae1f5d48a15103332a27efeb2353384e40bbfb. 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/GRDMM2500707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55205d5c6a62a10a26fa8f96c17ecb2ceac407d7beb18df13cc916b4396019ae. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GRDMM2500708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8803f81ade910a5f801edcc71cc421a71e172f5991d79037a003e50596a259. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:44:16Z), 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/GRDMM2500709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84c6a5e74f0bc84b9e9da82d720d1a501d72b626e7b3f4b8194c79fa8a8ae10. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GRDMM2500710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc060bf9303998a5750bbb03641ca767f084882053b37e98752b684b38fa35d02. 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/GRDMM2500711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e295a42fbbe7748280b5f2da66e5477e1dd1fc411e7b7e106c403e4416ced7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:05Z), 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/GRDMM2500712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2271c24004018cd713f13a42253f5bd17b1ae36209d4c1e8d29d3eb4b7742a5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GRDMM2500713.