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 0xdf466da12c800c331ca04d339536b1c1fdcb5875c8083d04c837b5bc3f38a500. 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/882575b3-87c6-44ce-892b-2aa5a43721f6.json and https://artists.proofprofile.net/proofs/artist/882575b3-87c6-44ce-892b-2aa5a43721f6.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 0x1b045d752f57f6a1f8d6612d6817b7c1ec1254a5cf82dbdf2debb253781a7660. 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/SE65O2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c7b770a6200084d81b3ad59ada1f84cac368d4cc38fe1566b5cc730af41b9c. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/SE65O2400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4d979246e293a92097adc2a83a22b884855b5d1088cb6b7a2b252e6b00b14b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:49:40Z), 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/SE65O2400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e5faaa17e29feb6f0297a9ab285c7ea9dba10b74f303c8755663c4059483d8. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/SE65O2400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b282733c6afdaafb6f1424c31d52154e2bb6fdaf549a6ea95f0d7d87b24dae7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE65O2400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a41986bb15885be3165250132a3e98a5a98c505a476b08e41624da3d0416cb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:50:57Z), 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/SE65O2400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfae0e43dcc2cf3abdd106953144d99dcd2697ddd2478fc63ac118889131bb1d. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/SE65O2400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90062ba11647929a52d1aa7eb55c0883f201e99698a06a116ab0a921dbd6b887. 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/SE65O2400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69310ee374535622b19700da515981675232e1758260a1a3560c49dad349f404. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:33:25Z), 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/SE65O2400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e0161d8bfd8869f383e2bb592da4eb4de600d25bd848a668f302981a6e21fb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE65O2400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf77b14886b82a22ea183ec77cd631fa21174f0f9c7fbe3dd142d5ad61ea37. 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/SE65O2400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764627afc00d77dcbb2a6694547cc61aba539f2fb5bf861ffd9b687e25a92daa. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SE65O2400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a51d6c3349546aa51da08ee1ab341a1eca487af36a5e2498af04bcec19d151b. 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/SE65O2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b4a9ed9b0a13e889c6e9d3a8b7d375a1a9ba827201833975bfc018a9291122. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE65O2400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362514c41264453ebcb3321f3fae71ab376324942df5ae04c1af530aaaedcf0d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE65O2400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843520006301e5a038e0c0afd5027f2b0a773710a7e59f6d171ed33dea27f49c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:32Z), 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/SE65O2400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06773840ea5d5e4bc8c569ec50fc8ec015ac0811a7670a666e689ed83fbeaee. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE65O2400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8fcfd2a902f27158c0c9dfff163197abc34022a0bc44dc0196f89b85ed0a45. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SE65O2400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd921cf6db95066281d8f08d476a5ed43e6dd894609707143c3674a31cf51394d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE65O2400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01d8d16e1fb645849120bd68d1ce7cf345289f7ed38b5ac5cd73480caccfde9. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:07:22Z), 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/SE65O2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b791bef2d3fae791e47293e9b1e20df080d30477e4ba6bd7f11bd0d4a6020a. 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/SE65O2400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bafda2e3318e37b1382948f977923f09d81b9996ce6a2481925cd243cc17f8. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:58:18Z), 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/SE65O2400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbda4bd84a1b599e1db6705ee75983a55e774bdf1dba56e2f01471dc0b1cfd1. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/SE65O2400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6725081e7977b89c70693cad4143c2bd8ded794db2de1d70059b41820dccb6b9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE65O2400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed78619a20b20c647d0aed5856c43844cf1af5c3d33b0655264f63a6b638937. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:49Z), 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/SE65O2400313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7104fc1641c0ef027b2b383c2a10181d95d3359b79f8a41ffe4c45fe2df8a8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE65O2400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6e418cba7b636b7d346dad0b793b6a4c6101d50e610d94150bcf09922465ab. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/SE65O2400315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f9bbf67b1943036422f5acd7127af20bd90b0505b0d9a46240b7e089b3f7e4. 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/SE65O2400316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa16b5d29193671f43b6fa3e0323a9bd6dd404b6437655e1823f23278f2807f. 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/SE65O2400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6b4408ec06db774bfcec46798b8aac3e8d5680760f6bfb072639d010f74aa8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE65O2400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff234bc8691c0f577d641deed809b15a66b03b1afc546e9528165402fc9f75. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:44:22Z), 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/SE65O2400319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290deef01142b74e0c7e42ac29316b74cc44ec04985b8d5bd1468d35ebd59749. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE65O2400320.