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 0xe315460ef39fe5ad6c5119fdd00e69786fd1334b0858970dfc5d64be5583f6d2. 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/3e0f89da-d897-4660-ad4c-d17aff872d97.json and https://artists.proofprofile.net/proofs/artist/3e0f89da-d897-4660-ad4c-d17aff872d97.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 0x630a0041ac55f4d912cc141ccbdc04e8bebbd0b9c4d03495d80c8eecdf58f032. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZBRF1886966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1c30c541a76175f49cc8714899663248692f7ccddb1e10a43d6cf247f43182. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:41Z), 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/QZBRF1886967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef3ffdf2a1b49f213a07274c8160720741c7896a43cb4992bdb81d8b5281813. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES51938793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1443a8a79825104cbabaa66735bd38520847b818ca6a59ff306158519cca88af. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZES51938797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47a4d470b9da784651d5ec03958cf6098b2acdf8c6efc9d9e413a520dd5ea98. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZES51938798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dcb328d90ab1ab8905be800ab8153d6f986d948bfcc7385b4f53275279819e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZES51938799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95543dcfdee3c3307dee8e602973336092616e73fe49eae5e7c11e249894fb82. 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/QZES51938803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae47752c1ce8e85dffc5fd676f74eaa30132840949d34cca3e55206eae6fad0b. 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/QZES51938804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb72995102e5f695e44e90e92324c863878044f3915e1f3226350aea84be0c2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:32:37Z), 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/QZFZ61996769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021bada04ef38400513404b7505857af6f587639059ffb4420702b0cccfd7a69. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZFYY2069235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211c2d56bdc37a5ab35fe28595ae9471eb45d69adabc9917978907537413f0ac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:07Z), 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/QZFYY2069236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc3ac1f29feff02075eef508954836de4c51dc01a3ec38e9bbb580e6e3a7c3f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZFYY2069238.
It's Raining, Listening to Lofi in the Car
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e46f1b37b4425b73602589678059ccfd17778cc06cf4a0b39491b41adcdba9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:51:10Z), 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/QZNWZ2079858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5780e63bc4abe2b4630e082ad56ad3f907fda7a93efecebbb231a710908a39ad. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNWZ2079859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1172a5a3b55819e4fe4b18a430b024af536073d3e7861d7eea9e3de57e3a9392. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:45Z), 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/QZNWZ2079860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b861188f7db7754280bc1885fc2497f0bca8b3cb3f245f092ce41529cd08c2. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:20Z), 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/QZNWZ2079861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866cc16abd607d11fc665aa1798c46dba7e59541b1a87635258aaf189d98760d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZNWZ2079862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83664f8bb991be406c7aa876d6e24e5a5e3380523975f3f1838541cf5fa1c5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWZ2079863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21e711e25e817d3f3b2498d19f36a60ee4e3fc726279a993b87fd27eb2d897a. 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/QZNWZ2079864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2319e1bcdd3ed20878e5c23ffd33e9d892f18db39b5ab7a6789625e6b00e484b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:22:15Z), 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/QZNWZ2079865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98f394a8adec02d7a58cf7d44aea2cfdc95995bf41cd2e30592bc1e318cc3b9. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZNWX2245437.