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 0x6905bebf4c16b4d473f4c0fbbeab3249cb242ce70707203b755353fed103b2db. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b7e3036-0b14-4547-aeaf-16a4f36ab4f7.json and https://artists.proofprofile.net/proofs/artist/5b7e3036-0b14-4547-aeaf-16a4f36ab4f7.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 0x4e925390dbdaa5b17500b054d95492536b50020d1aed4386a7aef2b56b765785. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBHMX1851001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8dab6ec4da90d3d7b6a37c135aaaa183a1784e1d50e4b0b878ef7394025f64. 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/GBHMX1851002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb95444cc6fc9249f3f31e2a88ce6eeea7b4dfda100fd6de778c498f0231e764. 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/GBHMX1851012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f8abe27a6e1a75df434ab1f2240b2c00548a48f560824ac33b437b61ecb8d8. 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/GBHMX1851003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422c667cbdd18eaaa570f0eaef5a276055578929b2bd361a0bc948dd8d11590c. 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/GBHMX1851014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58c577309337eb064206a2f2354eb1778606a0ec74e33dd734ba0710a91fd1d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBHMX1851005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc480ceaa0ef2cdb9fd4906a8ec0a373123e32c8dad7fa8da695da8dbd1f38b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBHMX1851006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db8e64e42b4bd46805b5565c6e6cc6a4286236fd6b43116e575ece702b803f0. 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/GBHMX1851007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171250760599a69d6d48aa479a6e91821603cb1ee02c90dc2a417d3328a54f7f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBHMX1851017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d571c906dfafaea7d024662c519f51e2b683c5f36baba97ab6789c452764b7b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBHMX1851018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd103ddd9d391e5c17ec539775f0e8b7415876030d19bff65bce0f2d334b27bb0. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBHMX1851013.
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 0x4b21e8830e282b18296a1262b63782e9ee3053bb4571feceee08830da04b725e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBHMX1851004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e800f581a47424cfadf729b7f01729a3ac7b8501fb4c9b24fcb7058c1473895. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBHMX1851008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8be6bd832591366391c53d733fa464767586913bccd5225ee23fecad02c48a5. 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/GBHMX1851009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611bbf62c90dce95b93f0b70f3d4729f6c36832876150d0ce5e9fc00ea760c0f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBHMX1851019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa5fe45e978cda525e3c8dff1f7521e57f76a5c13817852a6086447fcff7914. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/GBHMX1851010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0065c8dbe745faeb4fc960b77531497f3b8483201a37ecfd7a3ec41844466b61. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBHMX1851020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4127e1b0f82866ab07822e4d429c7687fb655297faeb4b7093c159ed018b09. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USRC17308335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19e852437feba802735134956d317ad065f4b8f32ba44bbb57d3ec1976be1c. 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/USRC17308336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dcb65fb4aabefa8b8a99a70a745e8c74a019da663906c513fba486a6b2fab7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USRC17308341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cd1e448a48953c05ec1b0482d968b995ded3eabbdedfb2c693fa3cafcde3c1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USRC17308333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3cc523e92a65b6c03c874cd145d3bb1d44d10ead8d8e7ede01e0efa7135ec7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USRC17308334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac218ab6df0fa8b20f73abbc24721406cd92d2bc6f07b217fea8e4ad3838fd7a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USRC17308337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75bac5c4ed0d55237e2c7b0c9fa4e18658d79f18f1cc4835060189103c41e12. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USRC17308338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748d8102f8b2016d27ec2fd192f05565ca130fd5b56a7fa8cce6c654fc698bc7. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USRC17308340.
A Whiter Shade of Pale (Cello/Viola/Bass)
A Whiter Shade of Pale - Cello/Viola/Bass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da8f70f2006b7c6a5ea6603674f22c295a714137da368a71bf329352122a952. 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/QZSR42196121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd686d5e1142f1a0b5c36ca5eb9af18971eb41d0878a97a9792c73d5e76bd0d91. 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/USL4Q2465780.