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 0xb9b95fa1d5772a02c4479d0783daa42b7bde203e60b20c37a60d19242c5f12c9. 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/09af8749-d203-47eb-a14f-cfbf31c7301e.json and https://artists.proofprofile.net/proofs/artist/09af8749-d203-47eb-a14f-cfbf31c7301e.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 0x1a2bf8f0820a33c3ff01b5e8ccf269ef78715103040a55781619f71470ccf096. 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/USL4R2010656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f32474e1c8085243929a089b1bc35d0a39a7a366b823707e1d310579dea9c2f. 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/USL4R2010658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38266c323704ea82f1fcaf2a350bb08f3fea596fa14bbfcf9435f4eca64ae164. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USL4R2010659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfc3373ea4d728b50d6bbe2e5a72f35ccaf74f391a3f47c0dedb9f6f801a44e. 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/USL4R2010663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf674e3f763533cfb070c3fdfeca48846840ab783bf8506935e3cf6c9769d262d. 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/USL4R2010664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38580236400df5ee4cd897492313b66ff0d9457aed0ae781cbfc62308187108. 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/USMTG1606303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa896028aa7640002094f25210b0d7bce475b9c1f5429e2d0884de01fb62ef0ce. 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/USMTG1606305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab180b71ec39b8c8c78c2c78a077c3be30cc03c602b0943dcfdf953f650bbee. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USMTG1606306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ff70215cbe5829a63701bdcd15a3049a8f6b2a52caf575da497c55b158e474. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USMTG1606307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43357fbe4db7284ab15b4ef19bc76487057bd6806e4d29026cfed5241d91301c. 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/USMTG1606308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf694f7763980a85dc13c7ed8cf02e6b38b802e05f33042ace2eeecadc8efaf. 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/USMTG1606311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccb7a1eca1ce952fdd11e1c4761c5e180d99d7471d76a695500577112c173c1. 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/USMTG1911401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55a3d76b1200f291dcbf5b7c94f165f6cc07563c0ca7792fe5c5e57b9d34862. 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/USMTG1911403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1fe742d03a8634a216f3cee53187aa350bdeeeb052151dfcc01fd9ab594d89. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USMTG1911405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7dbf8874555d8eb1436bfd00480f3ae381a93a6bc92de9baf431e4917b555b. 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/USMTG1911406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00c2c3bded93aa7a09c88a425fcd2389e72e8c98e0257f201741ffca6cf8d47. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USMTG1911407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd2b0feec40e56d1a827c288d04a3223aae991f7a8936637f1b40f5ffe36932. 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/USMTG2109402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711c5953d857e17546b095fd654599cc64f4be616b5c7c5acb27a3b9c89a2c9c. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USMTG2109404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc0fe85bd5d5efef6482f50f513592ba428102d9e5384dd83caf04768766d9. 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/USMTG2109407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b59b3deaf9b579c43c148d372cff2e7c8af3b958e7373c0fbb725608afc8e. 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/USMTG2109408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805fcd4b967eb3049110655d017a6068b2eee861ccd4b54727c369afe6badb4b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:06Z), 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/USMTG2109409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3087e1cb62331aec3dbdf81ce51e2b4d58befce4426358039ca6b230588080f9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:12Z), 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/USMTG2407103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3087e1cb62331aec3dbdf81ce51e2b4d58befce4426358039ca6b230588080f9. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/USMTG2407103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0127bcfab2f9d9abc5bbba172e2a30a43126899d4e3ac66dea54588137bf4. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/USMTG2407111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc525364775457c526768e3fb932df38d96a80c2ab8b087cdfb5a3339359461e0. 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/USMTG2407104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a403b3854372b6610904bc6687877ab324c6b02c54d2bf20a852206c38d0d9b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:30:17Z), 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/USMTG2407105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd127296cb7193242509b2681f3195be80e90b69a74e5cb5b2c8512ead195144. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:29Z), 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/USMTG2407106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624ccc68944afed45187fe7b05c4d8f02b205d751f02daf1b6d5e8dea500b5b7. 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/USMTG2407107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00aad3f58e44d0e4fe6c48d0434374c1d058a50d3d160cdad264bf44f46acb48. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USMTG2407108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c638ebc34c8344de8dfea90c8de1a854d1970015e1e1a371b9cf9fe0899dc0d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:15Z), 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/USMTG2407109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13c5cc84e0db81b698b1b5ec3c7808e2f6b5c2ee46876d8fd25af6cbc1df9d5. 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/USMTG2407102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90388ba0db80e08e39c48cfcf8122408e71bf1babac03ed660b98e4ddae9d165. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USMTG2407112.