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 0x4743dcec355add064422ba12b309ded1cec47646ebbd6028b9cf1786bac71c14. 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/39429a1b-14bb-4648-8ed0-02e4e316bac8.json and https://artists.proofprofile.net/proofs/artist/39429a1b-14bb-4648-8ed0-02e4e316bac8.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 0xdb85fb2a978db36f0ed20c5f6081874f605db48ce6977a0f4f52a37ee1e39844. 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/QZDA71923659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b7ba9fe080f51130a84fbebfdacca02413c1efe4764733acb134a6f55e5876. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA71923660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbfd16c3f60f1dbcdb4ff034450173eb389c1633f3a593307220203df2dbaf8. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/GBWUL2008619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41695ff3f3f1537e49e75a0df7f9137edb059cfdc2469e9aa150cf18ef0b46dd. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:27:48Z), 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/GBWUL2008621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac8f316aab37715bc0c7c547d9d1aaff177eea12efc39a6d7fd80f0952b6773. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GBWUL2008635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3faa666569caf5149d1e48bce06ac9edf98858be3586d6a8fd934cfe51e7894. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX282052132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ffb0a3103b0077ae13509457a649c6618d1a4e07b15772f0b1a97fa791158e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRS182044167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73189315b8594d69ddb64e6d276e75eb36153d08cf38ec1b8e389d09a0933f15. 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/QZES82129396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad20f4c3b75ac13c64f70fdf95f4159bcda7f7be48c391f38e1177eb865a351. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZES82129394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623c6102560ecf725e0763cd05c868d299c15795e8b9368cab96361ae4371171. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:10Z), 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/QZES82129397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4712a499ade2ea489bf66b80438459d4a0336b491333f508b42e75b6e31f9c5d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZES82129398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b6a285b1dd046db45a72d78caa8823ceb1170fa0bc9d463e65490557eacb1. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR10S2168607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dc83ff25873324dda0c84abbe36154a19edcb02e69e633f5f22ff855c5f910. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:47:10Z), 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/FRS182154097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4083814114e63ededf3853f448d33833f1f06611573086d6049d28c7a531d8b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRS182154098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83283bafbf5123f58892008675713c6aa78a3b9a48402c5be656feb378029790. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FRS182154101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0aff542792da2610c8006660f4461a948eef1a89bc0add3b14503652528dcd. 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/FRS182154106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa22b25de27ecbb3f253a734a2326e853396ffbbafac6e97b08c6d1b81ca7460. 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/FRS182154107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd93b120068601f5846c87e2c68e2130cfaf6575c79e104502754530645f201. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/FRS182154108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7fe815f0ffac2c53aa2ed10d928af9a9e2a351f15f590586ea0f2bb7e57b61. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:46:38Z), 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/FRS182154109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcb1ed4668d3eadcf93b3cb9fd802d491136c1b9253203c786a7b08770e55c8. 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/LBA0H2005521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bab16f95f6d38b758a284d4af924f6ccf29951134023059a22396d3b995688. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/LBA0H2005524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13090ef293657453b784fb28296e8e217dd9b71d75d0afaec3ab060f6ebff83. 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/LBA0H2006591.