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 0xa61ff77920f04d9f39741ecc7b0c6094e83bd389c176ded6c034e43fc049707d. 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/fae1b89a-e353-4374-afa3-2c5eae510266.json and https://artists.proofprofile.net/proofs/artist/fae1b89a-e353-4374-afa3-2c5eae510266.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 0xf39795dbcba4049c21edf4bd8f0e97cd7aa8ca7690f063013abd19808e58a3cc. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GX8LE2305055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482d353a94ffe52828bec08c45ab237a92287600eddcc40cab60ce5164650caf. 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/TCAJO2529009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19736aa1383c9c56bfb02439b29c8d4b7ea280bad7e290b45e71ab264b27ab2f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX38U2410282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bb362decf0606537b90198eaa81395160eca0521575afd4bbacd22c6a225b9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:37Z), 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/GX38U2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8b3ed0f18f03e376b091d174be56e0f122f26c47aa3fcb6392346b95abcefb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:53:09Z), 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/GX38U2488108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1788fe931eb90154efe016d9699b28fe8b36a84ddb78244a7ad346423f5d150. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GX38U2459726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bd8d88d2fdd3e2200f0460f360b666258f4179d782409661ab70a59c4afc19. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:38Z), 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/GX38U2403756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377a499bf14f2a741514427404ce78e05b9c388ac9e54013116bcbe7feab0e6f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:48:49Z), 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/GX38U2426366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d49baf68ffaf9a2e25467244a8c50fa72437358608f8caa6aa7aa16f323304. 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/GX38U2404224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8858c8f6f7529b24e7a5cfc2882ae98858fdd80e78f79a3775fe30bcbc03cf24. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GX38U2430828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae7caba124b16e0e2cfdd65ef047c1a83a65525d5cd7690cd42dc9b78a79efe. 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/GX38U2464644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22aa61bca50c5ab1fa756d1799de8a85c8b7df100d34630cd2332f82dca1317. 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/GX38U2477830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c358612ee1778a60687b0b9f1f9bf66c05f1baf05848c4280061ccb68d65608. 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/GX8KD2564461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fff879aab914b7c53b97a692d85bf2cd4dcfa1ab9164f27b56d0e17fdab41a3. 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/GX8KD2534486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36609165e5f68e1b2ab4c8d0916b6c8539a92b3508ba57b39b40f23811e600d. 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/GX8KD2531378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa158b224b80b1fb399e6308795e1ed179569bd3460f878543065ff140c4caa. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX8KD2561360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26ca7b7bcff38bf43b9e747153e6eb4fed7db8bd72ef7187f64fa6dd8121eb9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX8KD2539816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d86f6094730cb945179d0377d566526e68d56d55723f6ca5e9c8d0e661dae1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX8KD2577574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8242fe15942601aa3dc2cecc549a7ea4a8eeb9fdd1bb04b2b853e72f325faf6. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GX8KD2513176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23adffd7d060e8129dac0bfe10ec223f5de985def3fbe2522291ed555fcb8b90. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:43Z), 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/GX8KD2528790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9040f92c589c3455900fbd76b5644bb0e19e9168c25f0470f083ebe97e00e3f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GX8KD2519116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69988ec38ac82990fb176d152a7a79b0a82e40543634316b11b885882e84cec6. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GX8KD2524849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad8eac544c25821437b42dbd2bdef991bece82d593153d71b447ee743964a12. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAJO2518354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0c94ad6286d2155db2aebbe9d92bf201c2ec7a9e8f7541365240f99e451a6f. 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/TCAJO2518475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd6d0d372db1be2af41a627191b286de2d1ebdb0b941ccceb4bb52300b2cfca. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:27:13Z), 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/TCAJO2518486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d093af774b9226e8f92f4977d831cb98c1505a42bf7914fd312bd7838795ae. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TCAJP2518493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4712ac50ff67902ef42ff41529272e325891e6ddb3af86b3fd59ded1e1c5e19a. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:08:09Z), 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/TCAJO2518496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c125c3c510e3509475b88c5ff2570b8a6a82a7e7e07eddd7512bc75d358be8. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:50:31Z), 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/TCAJO2518500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81653bf4d98d35d20c8450ea8903eb4c2af5044e13374c48518bd01677ce30a0. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAJO2518531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42302f7f4c2557fcdd74876477079513a6625a6e74f72d25768df7a79ea4c43. 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/TCAJR2552495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc843380e510a477b6cde9c8ac5a7cc5231a86dc7f4407fb9e1eecfedf6c79278. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJT2592526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd668e9a5e2ad0b76c65468a4fc1e68e2587f2a91809ac77d8dacb624ad6f2bb. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/TCAJY2508675.