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 0x70b5bcc17c1c5630c1dd6be414e16c6f0ad09c225142e7f2f4ad9e8244a66656. 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/7c456094-e735-4b3c-86a5-40b8f9a4e12b.json and https://artists.proofprofile.net/proofs/artist/7c456094-e735-4b3c-86a5-40b8f9a4e12b.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 0x774ca64887e4e42d7006e17513ebc3329c4fa9b23b411b9e7e63c465ceaf61f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4TJ0823301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e8cd27ee6fd52a6f240e52d3c2e3e9066af9f359418ff575d2d49898c35a29. 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/US4TJ0823302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3287ea8ae3eb177d902c803823186839e2ab789407011bb3d648639f0f78a8af. 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/US4TJ0823303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a3fbae67403ade5e8ac9ccb1c96c6626be5fdffc8144fbf8deca83ed5eea0a. 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/US4TJ0823304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc171245f27129a691ea6201dd2f2d969d8b456546ce2c1b97e6d01fe514873a1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4TJ0823305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86533c0e92f87c200cef51182df3c1d8aa78192231829ae62df4f3b67573057b. 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/US4TJ0823306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ac72da50cf24d4cead5f8f01f8271abfded878e7f2790ad6e823bc65ba6520. 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/US4TJ0823308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471119c60fc1dcba0049150e83bed34b8811c8bc9c049a025f3d4a5dc7953ec0. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/US4TJ0823307.
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 0x265af83e85c94e68b42c73e19e63df876561ab3c49725181e03f082a83324915. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US4TJ0823309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7958a752742c8d5692471af8cc31430eac7f8f4869ac3b39d52ba2e7b1fd51. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:28:33Z), 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/US4TJ0823313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c8fd53e5add73497435a3e27ac1752617088dbc80875f06c157940045b1b72. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US4TJ0823310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f96c354c39b64fa9e5de969306a4631731bc8afad2b2a59ae7ce53ce5751e48. 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/US4TJ0823311.
John Naughton's Green Mountain; Welcome Here Again
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d8afd21e3184da7a8474119c58ff4c02b420c08bc53c37c99cd88bedd404f3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US4TJ0823312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e18c2a10351c862ff53a8f141cb42786856ba1fc90bbc3b75c6db95cf34d8fb. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/US4TJ0823314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bfedfd9bd73342ed923784df48318922be1d116714d9f067f7498f8cb8a4fc. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/US4TJ0823315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308ef6ef6f8aae339cafe67c53a671f679d29e5a2532a747826331cb2a8b532b. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US4TJ0823316.
The New Post Office; The Pigeon On The Gate; The New Custom House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbea7739176a14106c78e43c5e09ccf1d02f0cf8f387165008b04ca8c351960. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US4TJ0833217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c065e1371fccd8cc36c5ad5a576847353876fe51b6cc7f8bbef03c12ef1463. 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/US4TJ0833218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d53869290a95bfdc2addc1159f5964e1b40787253a06cc7a2a910d5d977a34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USPBR0420716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0996553716a685c09b350ba7c85048d43d044ffe95466cc1295f964313d94c52. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USPBR0420717.
Paul Ha'penny/The Garden Of Butterflies/The Broken Pledge/The Mother And Child Reel...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1bc7c25ed9ea8b7ba0d347d5748753043fbbc6fdf3e6302ac9d26ba56389e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPBR0420718.
John Naughton's Reel/Another Paddy Fahy Reel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a34c2a40be4748b4eb143c620bd9ec93271a649ef9b37f9bd90d1f6fa4f599. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPBR0420719.
The Cat In The Corner/John Naughton's Jig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dbb89ae13181d08556ebc0119ec655ff8583cec5705444cadb07eee68b976c. 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/USPBR0420720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6623d3bd806a19c5d7234c7dccd112f5a44a7ff8c37b0dde9008139846bced. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPBR0420721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6177949747d2165965b10a4827199838e83bc571ad114d9d8a8de6a23c33242. 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/USPBR0420722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed7323393ea691028753b03bcdd49bcd773fce5cf9c0a551be3f24b9b5fd4c1. 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/USPBR0420723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf408ce65dc570b6a1aafcb2adbab76b1911bf46958a7d4f63fdf67429d5bc89a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPBR0420724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2081711030ded561b189246f335e0cbd1f7b93932ef7aae14dee0b62fb616545. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPBR0420725.
The Bucks Of Oranmore/Eileen Curran/Jimmy On The Moor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c269c765555c0170abb60db063ce8802741986b2fe6cc88645f6532001828. 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/USPBR0420726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7e136b625aea59f1840625caece12ac96248a5c8cfb31278a3abc3f2d086d5. 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/USPBR0420727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc0cd05099238ad46b7c8c461848664a1739bda20856e402cc14fc3610cfc5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPBR0421539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937cc4db3bfe92cee5b20553fe3678e361a75c39132572cd41a9b3156ad1e709. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USPBR0421541.
Mary McMahon of Ballinahinch/Miss Lyon's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0ff15781941da7d2cfc9c57b532791f22d23bd001c7068706fcebd063547b6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USPBR0421542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb637e0dae226e6616bbd28737f1f01bb1b6fa86012b03fad46c5cc2dff2f44. 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/USPBR0421543.