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 0x54723dac1b6eb979c0cba12fa30abd48d9d8fb3c7d5dad980928998d82abfe3d. 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/821e7c13-c820-4d43-855d-19be547669bc.json and https://artists.proofprofile.net/proofs/artist/821e7c13-c820-4d43-855d-19be547669bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Want A Little Girl - 24 Bit / Remastered / 2000
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 0xab39286548f7744c1c4670c4bc162e1964a56ebd8c684fe4dce9ef1ac2f7aba8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USBN20000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8c6889ead1ea4698d6c943b6311ec0e42ba1e2b22fae56188052950ab9b400. 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/USBN29901017.
Gee Baby, Ain't I Good To You - Remastered/2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe135360546d1c5100dc12f4b88bfed64e8fbb40274373e14b051ea34939c8eea. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USBN20000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4493ed77f44bca41c1a75eb3ecb6fc8add9ce32802c66e33c0a36c86f954178. 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/USBN29901018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8645a0cae9b6ae39ef7ab1b5d4b7d5d27e0318d2390bc3b3671af3e1ade753. 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/USBN20000213.
Gee Baby, Ain't I Good To You - Alternate Take / Remastered/2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5276b50052f8e93e8f18529d36b0401ffa167e1e21b12fe7708b0b2e225f48d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USBN29901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c94a84ee21ca42f0c54f5af5d9db4034289592cc5db15bc1c9dfdeae3cb491. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USBN20000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7481a4284e36dd1cb5bff4296416aacdbb5e1b867ea33324e39783d47724100. 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/USBN29901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec2238ef7a8c32d8d9a7ace9fb62de9d827f05e36b96179d76d89e7da358f98. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USBN20000215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9297cd8ea96fddce1327efbb30cd226c613e6f751590f89f89bc543f8b3eb86. 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/USBN29901021.
There Is No Greater Love - Remastered/2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba4e2360030d1ea657b4d1b38e08dbb16ee7c25d6d2c706c87f16c346103ac5. 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/USBN29901022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4715e23f465a37dfe7c3aadfa4cc10642aaafbf8e1d3d730308241bf3da14a44. 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/USBN29901023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013c353a13b260744918fbae19ac103c9910b4237e2b2f83baab8bd319ef04ec. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USBN29901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab39286548f7744c1c4670c4bc162e1964a56ebd8c684fe4dce9ef1ac2f7aba8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USBN20000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe135360546d1c5100dc12f4b88bfed64e8fbb40274373e14b051ea34939c8eea. 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/USBN20000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8645a0cae9b6ae39ef7ab1b5d4b7d5d27e0318d2390bc3b3671af3e1ade753. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USBN20000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c94a84ee21ca42f0c54f5af5d9db4034289592cc5db15bc1c9dfdeae3cb491. 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/USBN20000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec2238ef7a8c32d8d9a7ace9fb62de9d827f05e36b96179d76d89e7da358f98. 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/USBN20000215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d54073aaa4bc6ba800fc277ee5fc1433cbc2d5d7d9c8212cddc1b3fc4bd0510. 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/USBN29800343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85e60de12675102112cc1d0ee2ce955cf88335785175d8c2f74054e5394fd09. 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/USBN29801325.
Lover - Rudy Van Gelder Edition/1998 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a70c346d74b14df2ea9836bb72cae6eef4d3ce64abb5d34c6e85fec1f41e40. 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/USBN29801053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7481a4284e36dd1cb5bff4296416aacdbb5e1b867ea33324e39783d47724100. 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/USBN29901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8504ce041b328817cd27a771f3f615ff4d3ea378938c360880f45038571327ce. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USBN29300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025295f22762361e73005af905cdedc30be27105ad329967e47fe3d907dabe5e. 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/USBN29500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf774fea1464c8be1be9c9a960e19fbd56fed3ade63bd7896dbceb5e58020333d. 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/USF096300380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bae9f3519eb3baefb436858a3579966f0233dcff9a3a6c5893bca92f8a75e72. 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/USBN29800871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5164e687f0abd5c52b1567382d859628aac87b8716218f456fcfb35ec9ecb0f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USBN20200134.
I Was Doing All Right - Rudy Van Gelder/24-Bit Mastering/Digital Remaster/2004
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d2fc3da42e1593fe3115f00a1eba05e391d4c59e6a663d888d872979e5daa5. 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/USBN20300800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7f4da135b0dee71da78c5ffc157c38d2fa4d9151565a466c80b6447f0fa329. 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/USBN20300726.