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 0x8f5a56365786214a04961d938ef88287d210248dbec544d91551018fbc139dc4. 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/e07d5f73-06f0-4654-b6aa-49758cdb42ab.json and https://artists.proofprofile.net/proofs/artist/e07d5f73-06f0-4654-b6aa-49758cdb42ab.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 0xb93b4ea35e336bbd31a36e4907af070537cda9685107ead49e2b60d9a343494f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:36:37Z), 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/QZK6G2164598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf092491d75a13179ed2758fc98ff35eb705589c6bc140d7b24ea522ed26458c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZPLR2109295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a2b809302d6035b8cc9815d2062146451c0d8ab66ddbcd93a3694d2ba051a1. 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/QZPLR2109296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a55f49c3f98296b91d93f7258f1176db53bc1a10bb96fca64a30ae37e08831. 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/QZPLR2109297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9f4cc30e041879358e2d0fbd97ac29bd08f6501f195c4def1f231230749c98. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:55:21Z), 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/QZPLR2109298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2c07696f133571f8fe4ce671623c0b4ab33634e1ae69341b0f0a733bd95553. 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/QZPLR2109299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aeea12b19e4dd08acdf1f1c74356979cb0bca718fa7c16a721b54726a972170. 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/QZPLR2109301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf381eb178534144b6753e8a2117e19110abb765528f2493da2c28373ccc3dcdf. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZPLR2109302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6055c9ccaaa898093d9b9bc0c5a0259da2b9c515fd5147767534591aafa8875. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZPLR2109303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e064cf7f27b58ac96b73e514d91ffa57703b07b5a83eb756806c70d1c7fda64. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZPLR2109304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e028b380052b9a9c1ff79c5403fbcd68ac45400a11356cbf233e1df61a4b4a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:56:08Z), 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/QZWFL2327470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b289777435dca6ba17681ffaf7f61b55dfa9f9c145ecd58c2b4510e0538d11. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:33Z), 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/QZWFL2327471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8b257bf0eeb9ca9ae3d21ad10eeac7233c6b5e305592dfda347c2801b10931. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:10Z), 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/QZWFL2327472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001056b4570976f91a98fa17b37251b5da9cef41a4a86ba07b121dcc9aed40fd. 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/QZWFU2410541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ae78a2060aa3b5403d376d57cbaebbb12b921f82627610d233a271fe408277. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFU2410542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0503f1d6296c48d5f7474cca41af903e8c2866bcb97b4b66179df0aac02fa9f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZWFU2410543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1e5b87831cc7d5b0b1d634e4d2f550fc94fbca2617c6f17e8c9c35e2aad76c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFU2410544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0feab94d75437fd47263f3578113ffdc4f0f64e5bac102757b7f2cd32a22dbf. 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/QZWFU2410548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d82f95572ee87eb8575d4966daa03597915d17957e4e3f44b6129cfb4f1aa0. 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/QZZ7R2476809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83858f3e122e76ac9c6811812ff5e2945a54f0ec2e6fd334e9146c4d897a8fa6. 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/QZZ7R2476810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d365b465c0a804ed141686e877258365c30f129c77e392bf93182d44f4eb35a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:26:59Z), 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/QZZ7R2476811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e44427096eb08b9363678f6932e34cf3e388f188aa8de699fbdd419c01a297. 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/QT3FD2569076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdb36b4dee3a14c9214e4b326a612b51c8018a32156181a6a051c18a4d4b02a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT6E92584143.