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 0xa5a1d8ac83718534e0c3033204cc5fa4428ae207d499da7075ea0f0434bf2d1a. 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/5835a349-db27-4ac6-8797-5f036b2746a7.json and https://artists.proofprofile.net/proofs/artist/5835a349-db27-4ac6-8797-5f036b2746a7.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 0xf971bd4e42cb219762ff2581f0f066e72ae2928b0f6cb3df0be5e51041c0b567. 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/RSA221901289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b992056c7f08d6c0b216b20d39751ef7adba5a6443a497a7d595805b8f2f1d. 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/RSA221901292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af099d32ab2daa4e4ece6c80825b8998d13daf2a3c46146246ea44936731e74. 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/RSA221901294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadec79c2f894e318e24139e68a24f09c22488027433f0f6e08f7bc303a72cfa4. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/RSA221901296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674acb7583e435e55ef72cafe900fe032767491de3cbd524f9a1d3fc08506a3f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZK6N1905502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f56a7f872d1b2a1c42fcf1bbe4c2a93ac58c4acb348da3b45d6e73ceb0aa77b. 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/RSA222190060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0432ff006a570d0cb85d8144d2233212b322d7ad89e3034c9fe1abe1d799ffaf. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BAA052337557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2394b2d6e2e76b1c824458c016989bd38a1c5c755548e70c210c2a8ceeae5c. 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/RSA222307476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008902fcb1d8e8d711e3c8a7582e37c8f58ac1d010ef9db75d2753284edf4db1. 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/RSA222307490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8d6738a064980b6dd6f3be33295b541b7904328b6c53d5c5aca6731c40059b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:30Z), 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/RSA222307503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac613393568330dc4a40de139d37644272be2a6350963021135f8e7642eceff. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RSA222307525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7bb575d5a547a24c8848b0c7edfe4b5c56be40a76a503a5e051fab445b9967. 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/RSA222307527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2394b2d6e2e76b1c824458c016989bd38a1c5c755548e70c210c2a8ceeae5c. 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/RSA222307476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4458c9ed0087c2eb1c3431101dfc200917bc7a1a26e15c81a7a7b19afd90ec. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RSA222307524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7bb575d5a547a24c8848b0c7edfe4b5c56be40a76a503a5e051fab445b9967. 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/RSA222307527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4658b667aaa6fff9f2823f4174db0b6875ad72d73120d43e89af84ba8984960f. 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/BAA052445043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7974f47994c54bd3543dab5f8ad638fbda2381b38aa79c8e8414c14d955d569e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/BAA052445040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145011dc7727dab1ccf8ab09e4b38a8611180ca70c757444223e6b645efec12e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BAA052445045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07aa4ea38af3577b88780bc44747058d50069208510c88fee95d43ebff2e243. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BAA052445042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac05b04b04929681ee97f5afb132018527c59b09c13d140ddabb975cf28a451. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:48:09Z), 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/ATAJ12302493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a8cc93d1c25ef33bf68914f8a610caaae9e23a5a892c9857d3ce7641c21aa7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ATAJ12302494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb2ba33f46b3c2d9073f52256addd7e2f661ec52d45c4517c93ea4478a3b4d0. 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/DEKB72428900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957c45ff5af4b6651b24a5c5836b8dad260c5f9a160e2d62e6e74e82b83307bd. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEKB72428899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3ad0b16cf1d355268a28fb2f99240a69130f3418827479313d5c09fe84ab8b. 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/DEKB72440537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cce807b2ca2e47a99162dc12f252999aff6159c12eda8fa07392826ef008eb7. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/DEKB72451611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec6f2082381ea83a10c37cff7c369896f215cc17b5aa04919a3ff21bd7f23ad. 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/DEKB72533627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd2160d98d7a5f080a147cd6bb19e694ea2e43389f381f7a018f5e3e47f478f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:34:24Z), 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/DEKB72533626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba2da18b284c29b7e5aadaaeea47fb66b4b6b2afe35b455805e63919f74a741. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEKB72533628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a8214f55f666ac9614bb1c9075d0dc69009d19dab0196f3ba8ffa977d51431. 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/DEKB72533685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9a3536a65658bfb93e65bbd75037c1aa0396624e7eb2340443266c3c817ce8. 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/DEKB72533686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4112c98b5a5d613448d9129e0c6845a2fe758105c6a7689d410b52a005c8cd9. 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/DGA052514811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb7f140842d36225e4f3cab9e83c7226761b91c772eb7e013668b4a45074608. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:12:56Z), 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/DGA072533824.