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 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 0x6d607afacc18cb8ee547f3a6e6ca67cb57cfc8959934ea5752dbc0740d5ed297. 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/bb30bd71-7a08-4b85-ac13-689d26038646.json and https://artists.proofprofile.net/proofs/artist/bb30bd71-7a08-4b85-ac13-689d26038646.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 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 0xa03f2180e8e7e039965b0a2b05f7477616195031c5db604416d7ad311a1df4fd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBKYA0705908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fdebdca8e9bd041d8d7d035bfb3446c907d32d1f912cb06deec424ddf74061. 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/GBKYA0705912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54d9061cc452d7bf33d3a0894221b93929937edbf40346e234f72104b788ede. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKYA0705916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a19f4ca2f3ceb68dad4bde2ba8a3817bffd6301af2aaf9566e27223803fa5f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBKYA0705941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1549aa645fea0a173cf918cc989465ac5e7b68a9ae19badc1972f08348286f56. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBKYA0705942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff553b28837a3a0364c6efde295616eeb415f83406b310b5e6c46c6ab7d0ba1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKYA0705947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90126884a4e0685d2f87ff5ff125c6da1d6b600bf23329d7f6398b2d43232bd8. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBKYA0705950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f87bfd6df7eb146124fae41b15c73493713f6a9b6ed62acdb98278c57f5b6d. 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/GBKYA0705951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a7d3d2c193671f145a30322ee50e13e61b4160c2f8b8a5ce955c9bae1ca71f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKYA0705952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe381f3941a3f266129ecdfdc000b7f7b800e9accbf1d6eaa71fb0221b4dc8a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKYA0705957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe970d58d1fd93b2ac273b29f9cf86eb750d50086eefccbc8fed712d2b188c0a4. 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/GBKYA0705959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf520689bde1c212c873aa326f43c90a813339380a0676bc5777df2e39ccb728e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GBKYA0705987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bc2358b99509563825d98503d2e83061e992f1d0ce3d432d5e49b9b20c584c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKYA0705965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812be81de196a5bd2f04e975ac1ccd563e5628e5f888f31fc2731deabce26d88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKYA0705970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c191f99480a70c147bdb386fe00f83216d2866451f819ad257f0cc574b0b3f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKYA0706010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba737a462b84123cb504c3ac9a17070d7f902ec99cd1fef989363ece0d51c3af. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBKYA0706033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9e0198a7ad5ea254d92abe36b9e4312ffc15785060a80c5af90379fb7d2ede. 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/GBKYA0706018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd02472748644180aac5163840252cd809804ccc32b566c069fb8f17d7326f9b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBHFP0901159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f3f9b7f2da5ee783c9faca0c97f222fffbf503423290a370b0a083924318ab. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/GBHFP0901164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699f989da678e72a4056a475a3f96682b66e0d09b35034e132ff03ef40c151ef. 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/IEBVB1400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc696ccd6e3c6200be6b7e604bd90e372c3f3a095e849945558633e9c28f7849. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IEBVB1400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a781b11ef956b968ad5d1a67183b46f1dd7bb8f4ab00bf738bf1edce7f296c8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IEBVB1400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa105af09b7e865416325636e42e4fcf498c90052e54b095aa7efc805bf7983. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/GBHFP0402496.
The Best Ever Collection Of Irish Pub Songs - Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7385c4b6d942b87bc1dbf39521e3e6a1bc0c9cbd1a0448710ba4697b65e9a2ff. 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/GBHFP0905177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9506f1a8c2536c075c9926bf2ae2f8ec1bbe251d4df0d6a89a29f3e4b3c8bd2. 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/GBHFP0905460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd73fdd3bf9060cb529daa83b04d7aade265c14b0639e091b9e3095ffbc40eec. 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/GBHFP0905486.
The Most Romantic Irish Love Ballads Collection Ever
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333388932556f556c224e50bf07adfff8a941e1fc8e506ef7d08c5e5e788369f. 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/GBHFP0905522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cec8184fdf2ccdf75c80da88b72c9db515f683bc9bbdc60bb4687a21d9f08d6. 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/GBHFP0402492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa105af09b7e865416325636e42e4fcf498c90052e54b095aa7efc805bf7983. 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/GBHFP0402496.