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 0x5c267824e585718f8569a6fe150af7abf25e149df444f4a8a16a7badda8c0892. 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/c03ab682-8d76-496f-9791-40c238f4221b.json and https://artists.proofprofile.net/proofs/artist/c03ab682-8d76-496f-9791-40c238f4221b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x60af09b0ab5ffde5ade987a31d67b43d0f22850c8d963495e58508a6f8f2d3b8. 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/DEYA92013707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22df27ec0968a1e31e9f36f335820ed84b22c3f7721880740b9a32d768290c3e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEYA92013709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1239db7f1bf975ae99d219060c1f45578f591046558ad78f34ecdffe934ea1a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEYA92013710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5761a4d26b93a8dc2c1f8a0b6b43e88d13156d019f31f82e06e9899d730bb809. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEYA92013711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fe51bb2847fb21b30ff175f5c0129b43ec987f721384dcdf92e8b70b27ff52. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:44Z), 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/DEYA92013712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e61b2a3c073a8ab7e02f36d87d52021034d143136d73f5aecd8ec1aca862251. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:55:47Z), 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/DEYA92013716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84534947acf18e575a7c3cc74246927239a1fedb5c58ad2072007e14ae420acd. 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/DEYA92013720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071c31ffebdaf74262ead299de53a7171769718799831a528ddd185c4c6f9a41. 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/DEYA92013721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012a0714974d5e80ce3e037a48dcf271587694c81fb7a22d0dfa73d8876fb346. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:00:18Z), 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/DEYA92013723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576810651e7fd9e56b93faf39285434bc8478acfcdcdab241a7b70d7a9513ff2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:12Z), 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/DEYA92013727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6457aa23076816fb309a5543d413147208acf9b9cdff46e156a352501d276b6d. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEYA92013728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b4d36422fdf314bda5c1663b8706f1d6a59ad97d9ab673eb67655339185aa0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEYA92013730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7802b5d2a82ce34cbbb0eccce4c0ef1c33b851c85c39cfe145b139f20747501e. 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/DEYA92013735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fc5cd8ce8ae537aa569933239a222e16ed605c6772b4ed2e6f4dd33ac5f7a4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:44:26Z), 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/DEYA92013738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0390c66d113f0cff9cc4f281d3a2acadc5567bd09107d75fa12012372c73b83. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:12Z), 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/DEYA92013745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0edd3e0f6bb90ca628af8f111e595a35fac67a143dc4daaa085527153fee14b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:29Z), 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/DEYA92013746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe729387665fb48b2c5080990db365af18af1135e265b35d583561f0ba443acfe. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:01Z), 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/DEYA92013748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b7f42c047914367b026da0d271b4e660c0383b53e53af75118a051e165117f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:20Z), 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/DEYA92013752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef4f47d7806ca1c646ff7bc8c7088bebd02205a69720767c6a980028d421190. 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/DEYA92013756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba46bb438dda9c41e579b8dca4a1bb708d676d6d54ade3ed401397f8b60bd931. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEYA92013763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed3acf6701d6fd52f5ef6e4a4cf9411bd6c97abc0f9ff66a49f0c5ab3bf62bc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:35Z), 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/DEYA92013766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fe26933d1f5e5c67495e1651e0b7d677929af81a42c601a42b4b78ba99bb5f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEYA92013767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f22c486eabf25d1bf6409682cbda86a15e23b0c0736f4c0e8181f8fad5b51b. 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/DEYA92013770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5ed687a567244ca3f3737d9ac569ef913e9aad3bea7fedbd184b77326df2df. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEYA92013781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd222e0d16afc7b539538326264f21463b80b777ce45dd7676d5b057738594bc6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEYA92013782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fc26c7bc45414c60ee620e558d3e821adbcfb0402185b77ad1c68ad654b605. 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/DEYA92013784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774fbee2bad864b821ce86395db96dddc1867460bf5df5c92b3e8b003af58118. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEYA92013788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe930c53e37cab3543c49a546a2e0cd54bfdc191c6eab42e25a0548a68c58abb9. 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/DEYA92013792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ee65562fea9515d826ddc1a2b140b957ebb95cf00c7a6b453a396dd008b737. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:47:59Z), 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/DEYA92013769.
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