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 0x1e41a22b9a8656a420ef2b934ce0c671d96e6a4031498e09ac52024720e9eb21. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a8b3402-29d9-4151-ba16-51e7b4464c55.json and https://artists.proofprofile.net/proofs/artist/4a8b3402-29d9-4151-ba16-51e7b4464c55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Breukelen "Brooklyn" (feat. Smif 'n' Wessun)
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 0x68699fe1d9ceb3c201bfc56e340f9a3b2d846914a27b431b8211fd037bb1503c. 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/US6680915561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd116f1c4c96492aab40e03b12bdb61a5ce2aba370156682c689a98f7df1785ed. 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/US6680915559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b086d4304085772b2834cb1e9f6bd7e5155352d9d5fddd5d9a646e2c6ba5fe. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/US6680915563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7019d23cd099c9cfd73fd1f9c88381ec0bec66d989dbcc7db12b3b69052ac5c. 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/US6680915567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa270e1ccc5fd197c08adf678252477db79aa885de7a34ae1f27d93903685a1f8. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/US6680915570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616c0bd75f93c7ed1481a9a52584395843f8b95e40963212a83829b7dab118bb. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/US6680915571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050cf696a39f61afd4926c10a69abbc3c3863080ca4efeb69ff23f8ba33dc6e7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:32Z), 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/US6680915573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeaff406dbf418a736e802dc4f11d7634c01950548b136cf3ce2c7f519d978ad. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/US6680915576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef8a703ca438ee73308a008c3aa4b34da93d05b90be4aaf3c202d38584f2b6e. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/US92U1910118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92496d3244849b8040d38478173f9775086307c07afc752bb9d8bf6a5e4ead21. 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/US6682300414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774e466dec7c54f696373012c5d7c6ce829fbe8bf894a311d30bff7521a43e0b. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US92U1910125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd345e85f625b8937b3a4df654adcca266db5c7fd6ee7b4b26654a1b090db8dda. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US92U1910126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47524b34c4a56f8f0ac248ae13b2534ea8af7c08632d9321748414b51305b6d7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:13Z), 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/US92U1910127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231aa44a409af9ecffed3122aa9ff7f782fe852ad21915ce30aba849f23d718e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US92U1910128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf54fa2477cc786f8add73cdf44bceb9b345a20e3d5202b1108ed90f0d2eb505. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/US92U1910129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6012e03d1275a8006026bc53bb5a032e8ab71629b3ccdb0716e12c1c26f9907. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/US92U1910130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150adfe2122e657cbc258975e8371bf1bff753439aee3cab991ac7c9ad610c1. 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/US92U1910131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81873b0de86eb40ebcf74a7f99b2b0211f2460dade61aa312ac24790c9b0dd25. 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/US92U1910132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37345d7c69a81a4f4f6df4d44756d3e9a62bf3c45026415ae9484c38e996fca. 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/US92U1910133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe576e602445c9c4a86a798e4f0c6aa1459af068c68afb81a879aeb67de13f730. 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/US92U1910134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8eaaf7988c33362ae4bd6aa8a1408bafc5f94eddddf05fe6f4b2329d7ee94f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US6680915727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffbdf1881e7a64d5a16f67fd09710ed00e33b8e134adddab30d3ecc9412953b. 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/US6680915738.