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 0x342ecec4763c1c7c2a27b612fb136304523638397962c9877dbe7983434347f0. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8313c152-c464-4c70-8576-4d207f3e6f54.json and https://artists.proofprofile.net/proofs/artist/8313c152-c464-4c70-8576-4d207f3e6f54.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 0xeb90de20fd84311d5874bd0bb4ecb0cd6b0d4ea0154a5c7dba3d559d7a5d43ef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPCO09434830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92076e039f4b8d4474d152403c636a80b72337519c8091f3d6ca1b36916dc8b9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPCO09434870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e705298f8ad0a9c3f346d74c6dd672fef874fee11276a1d1ce8f9570b5d8874. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPCO09434790.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d19c73451378aae029357794c2f52d68f9fb61c22d688a2ff1179f739a5652. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPCO09434800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4eddea116f81b981841456586ea9cef7881637b6a9b29b797b1025b7fce551. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/JPCO09434810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279965e49b487c7f19c26413f868d1ea13d97435849eb9024ed5a7154fa2a50a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPCO09434850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87bb260f54745b7d7b68daf4f340c1895e2f1ea3fd04de82ad7d4ab47f0a4ee. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPCO09434890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf96c467b354c123739af3d04cd5422156b458a3af25a6b12c770c9b84d8cad. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPCO09434910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7897585a084fc070c22e47913d47971beea859a21d114439f179a5721eb9d21a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPCO09434940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc297fb407f6bc75a1997aaf5f2ccbad55d3b428cb58b78a10974264da3ad36. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPCO09434950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d02ceb94819f8e976e3d07887c45efd351d2a0146784d7887fe27153d55eb73. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPCO09231880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb20546d31ddaf351cbbb5ab843319307984744b32dd1d97d0a2b1ecabb6fac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPCO09231890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe308573d1da2e7c5e272380500f6dfe0a3804494b712f9fd1431e5c46dcf9dce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO09231980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95241a35cbb4168be74ddb7ae2c0df2798d66552c3d8340a69a20246486d28e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPCO09232010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b81fe05376db0181cd19ba389dc955a03028ac25c6159b01b76a5dd68838024. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO09232030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778607fa3be68a263e4a231eb2467c62022ddd78f15cc87f3b31a5fc33a3aeb9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPCO09232050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09cb109f3efc4c73f1faecc0a9f07e9e60d207fa93fbd074e594b137b3c3a63. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO09232100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb789579c69d4d02518682d5c675217a0ec31705a8d596dfde119acae4ada40e2. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/JPCO09231900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb1f2b7b3b6b513f2aa4b8c5a2dc508fcf63521b8d7bc81db749ebc9e0a2d7f. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPCO09231920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7db483f81f82b1ad5a9253929c36735cf4e6354caad05d0eef5fbde61212337. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/JPCO09231930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca02825ee477f7a35fd812e0f202a295ff865ba5f1b28355f2e3e9968f69d823. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPCO09231940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb0b6072ae9f1d29f43f8e14713c998528c532c972833544502e60c1946fb55. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPCO09231950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390305e27ea2ec783a5c0fb1ab84bfd90c58024a11a8eb523e5172426ea3dfd2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPCO09231960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cfc780e5e67df4d5e23cd2413c1cec87d34529df884e93fc7243dcfb02b493. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPCO09231970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb8c7453fbff257bb70eab36d0868e81f4731241e005fbf91f1f1a28034d498. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPCO09231990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa216726c31c7cafd036f355c1ee46bba7d7852f86a03d6d9b40db1b1316536. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/JPCO09232000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7167b93ac2b8b5998723b3cb2cf26e2c9bb1bf1ffd562797f0e92c0ba615c8f6. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPCO09232020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95be259befa72920eb2edee6a1a83cd36c1b6a6d4fccb5514057b5722c69b77d. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/JPCO09232040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e87a9b0c51ffb48227d552d2ed092d1313fdaedb4982ddb1d419ed4c3924de. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPCO09232060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ef650fbbfb7b6d5fbd7b5aa0e53f0e0846ac2dde8a295c72122ee602fef64. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPCO09232070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1f71db0ca4baf254d528709982708022c2765928573c0959a3f54760a22e6e. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/JPCO09232080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f13208b6bfaa91d38abb2b8d5624549806b266347e843a09e9d9fcc71200cc. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPCO09232090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ef2d12b328511ca68aa07f222d7fb5e89a8952e44d0ce2f9786336a48f4b40. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPCO09232110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd656ccea3875477cf48ef21709931b10b3ce69d7267a34a64e47e8b8ba620eeb. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPCO09232120.