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 0x1c522c88abb2ceaa4cb56976e1e4108d9f1910056d549e790a62c0bad9855f66. 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/9586ae3c-145d-41f2-aa83-37bd7ae133d6.json and https://artists.proofprofile.net/proofs/artist/9586ae3c-145d-41f2-aa83-37bd7ae133d6.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 0xe842df65c887cc66f919797fde17fd8bd6a3f5010ac5a4787489ba89a7703607. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/UK9AV2100250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ef021077c52cd78277a6c6573364ff8ef461c2c57fb4ab7240672fd06bd495. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:20:35Z), 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/UK9AV2100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fac1d6155974d2dc2c282d2a4810a310cc18c0339909bbe260c92ecb9aaea82. 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/UKE6N0000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4300325f61e2f487a40584d9844c2306e53860fcd1545744da6507e6600e2dde. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/UK9AV2101929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4e2d599011b3bee17eae8ffd879e34160f76f1fe7a929bcafe38f00a8a7ba8. 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/UKY262200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932223b96a56558f296ff8d9c89b71c49b25761e4074f445e8068662b016e0e5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKY262200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fc292b5efb0c94ff5821d25e160b0c6b2217363213547a5ae20efc4ea992b3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:29:08Z), 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/UKY262200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc82769c4af9a3df13ee5f8a283d4bddfe1d7bb901139296174834423e071319. 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/UKY262200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4f16068c15e2b86b38eea6ff46bc02302654b550cccd3b185e0687275fec15. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GB2YG2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ee92b00d68d0509b5561f5c2650f1fc8820832b47f011fdab617cdb2895ce2. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GB2YG2400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cc44df7033634436df4fb28a118d2701633c7193556848065e13b0cac80d49. 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/GB2YG2400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd63d63e56c19951440f589b6c223dce309ece404b8267bb741aca14d3397d4. 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/GB2YG2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9109cc64ff12d7069c7154185729af2a566e6e9e7fb06299a76f04d88be5c46d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:30Z), 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/GB2YG2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952f30d77a65923e849248c446da54060c9a2b060668e507ca4fe088c20b1b4d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GB2YG2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab05b9bfa3ecbe3c1a3e8d9ab6c8294d63ea8619fe4f8e0e4fe7f4ba5ef631e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GB2YG2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dba0012e575fe1618e8ca448b0ee7cebab906bfda7afc768a93e1c860360276. 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/GB2YG2400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b29c713fe9d507904fa69edb6ca7a112c42e6009d3db937e28092cb3f5d49e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:27Z), 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/GB2YG2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f07900019fb01bc5409fde4d89ace8abbbde870fa0e75ae5bf3b777d6c7860. 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/GB2YG2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab05b9bfa3ecbe3c1a3e8d9ab6c8294d63ea8619fe4f8e0e4fe7f4ba5ef631e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GB2YG2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982784bb684e2b2121572b36512cd22885090435911dcd7dbd32d86f2704a946. 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/GB2YG2400070.