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 0x98cce088b78b1e563360869beaf094628aa793841fb63843dde3cd427811cad5. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a33a99d-b490-494b-93a0-7a032a847c50.json and https://artists.proofprofile.net/proofs/artist/4a33a99d-b490-494b-93a0-7a032a847c50.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 0xcbf86ab908497eb4ae71837ac8c57807ebeda831b0b46bf93b6b7b041f5900c1. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3F72529016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c36824cd98a522901ea78348f3ad8e641a40a9a9f67f8a5ab4ccdeaaf9cea7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT3F82538517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14252a447586b7af43574590ed2ae3dfb0e5180d047cc5baee20a8b71f0f9846. 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/QT3F62528171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99cb832dd198f1a13cd9f321a761c465e83baa5b0ee1dc49c2cccbf0d99f477. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT6E52559888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ce162af29c3a7d8c48a40251518ff35e0d53525a5805b495ecd9b450ce4f43. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QT6E52559887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b9b079852a35be6680e1b88c96c73da45589fbc4b70cc19d6c871217bdf87c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:57:47Z), 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/QT3F62525743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229e8c9375bf90fe48b0f0383f34de81302f21eb29cfebe9b75943a6faf3156c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:01Z), 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/QT3F62525744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077576f5ecb0eb71966bf4b439ec1b2ddd4d3fbdc810d6ba48da97e40aa4f2e1. 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/QT3F62525745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa9a6b0a3d945b9ef260756505bd567be463a4539cd712a6003da21aa330f26. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:36:59Z), 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/QT3F62525746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eb8d1b4d067400ab5d1c826188ac73bf2d9c2fa55e8f4fd3336cc247c17783. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:55:55Z), 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/QT3F62525747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1520b836bf576a28313490062a3aee1221dc7798f410b921c889a03753d08cea. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:41Z), 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/QT3F72590537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95adb8f105cd9a419a17c5daeee149955014ea7d7bcdf60705369cc8e833ed40. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT3F72590538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b1217daf93c310677b5a534e79873b4285e895448049e5dad8d7c04b5afd82. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F72590539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80394cfeebdc2e24e79cf6ce5541c156b99284df2e27c6c9077e1ff2d22e563a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT3F72590540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1ea519a1f1cff8c518afa1797ff826a6224848a14a20dfb7a52454be2e5ca9. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3F92584581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a827afd56e53b6125f47365b6f290a3d2a08974589730ef878ab399e21a794. 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/QT3F72551591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea8a62f03316cd5840d1ecccd7a63044957a04411fb7043f5f4b1b5dfd08954. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:41Z), 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/QT3F72585821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd378a87abb6dfe6750ad822ad9038078fb9d444e25a5472f286cd90a141072f8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:13:12Z), 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/QT3F92524209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080f7e46a997c285fb347641bf22711d1d4eb335571dc5509a9c792b204041d3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F92524210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6b7a2f0cd09906ce71e82296f97b6a7bfaf5f8613ea8a114627d26f840ab44. 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/QT3F92522056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6293208a6eabfde5978dbe3a2573f8d56214e665503178b8ef5483b84e61682f. 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/QT3FB2546909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b9981cf96469176edd482557b5fc1619b15706c308b83fbb45ea3901c051d. 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/QT3FE2593724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41528075f2c72658000b12e0afc41103385cb8d7da8e758b9b6f4665ca8e64e. 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/QT3FE2593726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf123056bffe60e0f760d7593d7cb0525a74acace711cc158e855c199d958b822. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QT3FE2593727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3684ee863cb8d001e2daa3a3feba4f11e1df461f70623d079ad7fb238de29fe7. 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/QT3FE2578934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d02cff4c45f1426763bb485ba0d113949f9d37820d910d4fadbdf390dc7c4d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3FE2578935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef5eb626caa99a93f5ad87d04ec251084ef375b8acd34c04dc26363067b20a. 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/QT6E52559433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1b8d075acd16addacc3bc4e2dd8ec21782f4e46ee0ccafee2cb6c72cb87ca3. 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/QT6E52559434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1df7423b872540a9b2e5665cc8cbd86bea250dec8e8b4e85bdf5af7cf9b0999. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QT6E52559435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8c6fa3dc361460bffedb738d5874f44e9ab47aebc650e6b9d9321e1c8f560c. 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/QT6E52559491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464782e38a148216f38ae75e512987c5438a0a4b2809b8759dbfb65b8d4c8a67. 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/QT6E52559492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd699c87bf8362db5c8667fc103e16230f30a7322c74a5b15481dca3883301b7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT6E82598583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebda3be660e70bf5b9b44068539cf3aeed077a85bccce490cb1519919b44ada. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT6E92502990.