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 0xe1acb798e9a9f6d979ca03f09db0424e897c4be5e77286c6514f3878b678e19c. 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/bec1294a-de45-4d92-b99b-798d68159091.json and https://artists.proofprofile.net/proofs/artist/bec1294a-de45-4d92-b99b-798d68159091.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 0xba92d650f77988259c41d5e9d70ca849af5147d484cd576bc8fa5eace061f53b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR96X1845741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714e35af542c005e4028697c6aa1f3cd055359dce178362961f5566c35d64537. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:11Z), 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/FRX281942583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdc46e62af389b932f760e2c5e851514d882be9553f453b56f0b23b891a2916. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:11:26Z), 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/FRX281942586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ed0527bf30e82a2629f2cd4eab2bfde6c562a2fbf71a03757ca752863058ed. 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/FRX281942588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610f763adf57b98f7c2485c8980b61d0dc3671f46d89624d558e83c90aa0068b. 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/FRX281942590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f667af8133ede71cd62c90cb2fc1a2854e04bd39949a85ce120d4a55405d72. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX762079324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6398c22f099d4b31e9ee68307b873477ff95c103a62bf7b660162faf6499e74. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:47Z), 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/RUA1D2278777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f68708d8c92724889d290c2010d1e613a7f04a4557cc7083558333bc6de190. 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/RUA1D2278779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b61a72f0b20a5ad622ea25d5af256e58390e8b12c2f0b383e4d15e0f58a517. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA1D2402657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2db5b5d1651731ff8c4bb67875df89a4320997d9cf78a6b1be6ccaedf2d00. 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/RUAGT2461475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc02e04ad654686e61aa289c563b182d666ffc1f3d8a800d86832eb83e8b9f12. 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/RUA1D2586099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f2fd6cc2e5eb00dccfab5ad58e3525b7a083f6fe75787b236ae573aac85f19. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:54:06Z), 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/RUAGT2591291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe643afdeae35753a4234353413ce1bfb6136c757fb4440466ddb0d238b4fa16. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/RUA1D2313626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce8a347eda6e22ff44f766e974977aa6e999056638984c40922dc9280a1497f. 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/RUA1D2313627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3721a7524b3b864e4035b7114d70557521febb04336ef3a63098511ff7c04170. 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/QZNJX2110615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4e7bd996ac7180f6351c10b00c89885053ba99dde23dce8086278da3c811e1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/RUA1D2245621.