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 0xe08c1cdf5d62ab03c62a491728acebe600957440690c8353b8e809c71929fe73. 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/e17f81a2-8f16-4054-bd4f-0b2c94d1e718.json and https://artists.proofprofile.net/proofs/artist/e17f81a2-8f16-4054-bd4f-0b2c94d1e718.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 0x631346ceb9940bc3b70761586255aa4326bb0ca54ca5a84ac532187a8f36571c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ES71G2316373.
Mary Had A Little Lamb - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1bb62433e94fd90d4cf184f027bba4408dfeb0556f0277ba71e7950a9040bc. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ES71G2316374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75f09f5a9cd073085fb557795abfc2ee10f6264ddfc77baa342f3b5ad21c960. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:00:39Z), 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/ES71G2316375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94eccb79d7a91f8e19ffbcc731e30c1dfd347f996153f1f7cbc78380dc6019ee. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ES71G2316377.
Alicia Va en el Coche - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1de4f59f9e1f05a488f0956ae7eb1c795602d38c57e47ec5b27ceac60b59cc. 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/ES71G2316376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b76a4d62ed1076778781466e000de16e03e36d35bfd3b8623d686a3ad5518d8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ES71G2316378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c3de452d9012321650d5c84fd5e0bb80edcd3cda5e1311f8c5851bf40bde28. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/ES71G2316379.
Diddle Diddle Dumpling - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9913745d53580342ed04ade8f6cb490b0f431ad0bf1a0565abb5c50a8232b3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2316380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c99de378ed5ec3be5fb6fb65b8dd01f61af11622250b07bc114a910ba9c8b3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES71G2316382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288dc9c8368a23fc95d777d20b6c941195f722b92a94de1debbdcc8e4ef74d85. 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/ES71G2316390.
Head Shoulders Knees and Toes - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612061982114c04e97fd85911521d5f5b4fba0058e5ff91b9caad1229f9cad08. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2316391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5791f05b308116e530b7fd9cad772076f2df1a92167deec6ab302b83dd5a78e. 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/ES71G2316395.
Tengo una Vaca Lechera - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eec989fbdc0d78f0e4a49357fb2852a15cb4581ea0c25eb774b96e565d2f61e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G2316396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaebb2dbcc53b074b01929c484d9c0a01ff5a0461c200b39d39f40db1afcf6c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ES71G2316397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e9991b7af3b42a208350370f59380f0bf012d8d9ea96adc732cab330fa03da. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2316399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f069a6779b6c7277334f0942404953cc30fa6caf042ef622aeea79fe2777f5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ES71G2316401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407b336136aaffa943736018ccee83680d510fd3b4eb77a4b00c5eb376ac6dec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2316398.
The Wheels on the Bus - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd709aa767bd5ef2fb6063b9b54df9bd25e2bec1a24eae340ae9b3ad3394a72a4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G2316400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500411cfb8a05c9178029214f7c8d3a0335124ac2e1912d4e54a4773180101b8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:55Z), 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/ES71G2316402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb350fe939495c87ad3003ec990698265f3294388db220309043aa38c82db1e39. 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/ES71G2316404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97942a99dc51d689548ad8c4070e697129e527d672470193f50c0541af4eaede. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ES71G2316405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ad7c079ca2a01ae75e88fd6ae5a156eaffa82dc3d82ee61d88001cf1804ed3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ES71G2316410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a0776fcbf5b662814e3b65515d4533cc5c2ead5b762ffc00038227c0d4b75f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:10:14Z), 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/ES71G2316412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cd5abe763888bc8dfe3310d2f39a7e81ba9ca77c9ceb8b1c11570564e8d339. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:42:24Z), 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/ES71G2316414.
Coming Round The Mountain - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459783edfbb08f61ef985b4fc8710d5c8d797b2116077f3636bcb346bab68c0a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:28Z), 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/ES71G2316416.
Under The Orange Tree - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e1b6988386db3095c504578179510d8d6f04ba7ad90cbccc15b67ed2a521e8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ES71G2336199.
Twinkle Twinkle Little Star - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295e99ce10f100fe7179307f11786c0ec10ebe444a62c822569a2896bdaae60a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G2336198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf79b7ec1b16c950607407aa78c433d316d90c2366180b88b15525d828ba1623. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ES71G2336200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb633fca39ab1a15d2a9daefe99f2d47a8e6fb5337ff21be429af8f86299291f1. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ES71G2336202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa08616a3b95406b14f6b123eba0bf0ca70c2695ffd0a316a60fadbdb04ae55a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ES71G2336201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c21a53e64c1ccc87cc8f0842a26a51042855d3247eed4142ed4b5187caa041. 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/ES71G2336203.
Que Llueva, Que Llueva - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dbcaf0286301332e87fe872ccdeb4592148d76bea7933be431c1a58ebbc8cc. 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/ES71G2336204.
For He's a Jolly Good Fellow - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e2b98a15b24e83a97664a0ccb9bc230ea295af93e78aef587936bc37134082. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G2336206.
Cucú Cantaba la Rana - Slowed & Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b0413d3a0fade4d21eae6bf9437b6fe52bfe9c062293c82211d2bd388e9b23. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/ES71G2336207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab1aebf9dcdaea06c54fbbb5806c3ae9c9b4aff668e077d78fe915c0a0456d6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:03Z), 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/ES71G2416731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721728e547fecbae218136dedd002cb0b1fa9fd86997b76b1b5b1f3dce068bc1. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:56:58Z), 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/ES71G2416732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa99c852d48a93d90754144b11fc3624328557529551d97e828879cd738ed6e. 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/ES71G2416733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c138e55deca869239cee13a73592c984ff4ff7fe01ed32cadd875a66074e2a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ES71G2416743.
Wot Cher! Knocked 'em in the Old Kent Road
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bbc634860dbce57f1ff9bb7bba2b283905f91465be17076fd81868ab7116b4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:05:55Z), 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/ES71G2416744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9981e86aebc723c5b6e2fec679ef4df2a3811875d117123cd6dcb6d22c6a0941. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES71G2416745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51b481a8ae5cade08787377ab2e0c06b2e776e893b610c58767d6090a61ef04. 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/ES71G2416746.