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 0xdfb2db37b635f6e96bdac6edfb170d1926f49426559414a5cf623a35299e5d45. 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/658fd68c-b92a-4862-a8da-bfd71acf3f0d.json and https://artists.proofprofile.net/proofs/artist/658fd68c-b92a-4862-a8da-bfd71acf3f0d.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 0xfba06ec454b3ef620cfb03ba6b3163e939ace6fdcd88574a960f4c0e9cbf084d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:05:54Z), 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/NLGM12207994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015dfb36599bcd63ba97a07a414eb754dbaf86636c81ede7de6504e82f3373c7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLGM12210836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0860a900a748fbb1e6b29808b032b5ff3e95ed9267eae56b8cbfc5c7903eb1c2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLGM12210840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702f201bc2a8347707dc1efc52bac696439b1b91a7db11282d97e1328a18579c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLGM12210633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574e5fc4b907783f5d493d7206104e965a778d803872d8ec794b421035303a52. 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/NLGM12210636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1c922a0b04d08163913de6ca65b48666b781cf8b9c84aa26d63a3d6d1750cf. 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/NLGM12210637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f3d068b35507632ff868fd74cf28eb172b1c090db16570a35a04105784d35a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:37Z), 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/NLGM12210842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7b3d1a3e45b7102dbbb78a378ffb67af63d1dbabd05fa3528be3c228c754ab. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLGM12210858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa574317c39692bc0cd8dbc2d24e3999034b183801ebb2ef5aa5d0f9e89abc1. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:58:52Z), 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/NLGM12210638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039f433c53117465e9f68cd871f4a043a4e160b5e27990b4383bdff7668dafb5. 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/NLGM12210652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1fb083d5cf237b0268adfc2c11b681dee1ea5608d4644a74dc7e47071c9fa5. 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/NLGM12210654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b436c545f03406f94ceae6665f1ed1634fd4dc84bf7f88f1f4c77a38c3285d3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:02:04Z), 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/NLGM12210859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0363aa74178f70dab57012114dcf6e21d0022182834ea082f37fd4c0be0da4c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NLGM12210862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666e8a7a6ac556bb79cc7f4cfe2db4c0ae4b05d964d9da3ac0d040c1f1e5eb13. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/NLGM12210865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192185af3315f1c96ce7614bb1621c672a131e4170e92da02ab5596c7581a9e9. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/NLGM12210874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dad841ae3dee6941fb6d6cbc0dbb62860f71fc7de24098144d8980732019d0. 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/NLGM12210876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481207d759b31eb3e4e6b12cc3b22c859ad0d8f89dece6c0ae9e42df2e3a4d68. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/NLGM12210878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510575b4b4626612b0ffcc142872610191472029f23bb46712f53ae3fab75191. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:00Z), 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/NLGM12210879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26651f08647bc785b0d063513ce51bb642de177c639d68b334c1fdb46c48ec9b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/NLGM12210669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992a2212531c5cf2d4263685d016ce778f65369aaecee170bf1bb5f48063cc12. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NLGM12210670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006a98d6a881b35ba659c61034152da271e05b9cc458230d28ac218bce99befd. 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/NLGM12210671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa61db89aa81e55a975b82a23646787194aa88442183095ce885318097e145ae. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLGM12210673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b48b8eb909f5a5b0549bbc9096371b1d243ad44f1410aefdf83e1d1549ff3b1. 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/NLGM12210674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3025b8bbec4bece6250cffe44f4a3c4081153ea62eb36da1117ada81d64f76. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:55Z), 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/NLGM12210675.