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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c9fc04c38aef86e73202c156c8783e18dff5ce590180a1dc366cfb68709849. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7d3ce7e-5e3a-4080-a75b-f8618eafcf27.json and https://artists.proofprofile.net/proofs/artist/d7d3ce7e-5e3a-4080-a75b-f8618eafcf27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vaelluslaulu - Peter Franzen ja Röllikööri
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7546c428ab5c50a176d8e295c00cfe791a87def0858ee01955f20c93564b9e5f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIBAR0100274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f629510c25abf13dd0f5fead8c80e4dc9429476c97e97ca8b7e081b7e80bb8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIBAR0100342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7961ce13b8814d0aced40dccc082cd125d7b8c3399c8bf98b3d301f686c473. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FIBAR0100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793debdee5bf4caad75471706b0e63808053adfc5146fcde91b48951d02fe281. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FIBAR0100347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2913fd134402789fb5a3d5013ea94152e29747cc02a5cbe4e9c2d82e96d3b2. 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/FIBAR0100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dfdafefa6186a4f67625fd223567db117aa26f7ffbafb3e4512780884d4b6e. 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/FIBAR0100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9d088942219ef5665f92f9bd0a2c0fdf8f0bb289d78fa7b0a5594705dcf451. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/FIBAR0100345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a12571a07bc94f33ede01dff61d0c2784d1daca89166efa34f49106cf559a0. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FIBAR0100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdba681e4bdcf5f964dd2f01d3227fcfb3f1930844fbfa23f6b3067df083973. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FIBAR0100349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3ec893bfbb8219f8d995e81d0299846ebef129253ae0fd355c951fe859a897. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIBAR0100339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd01922cca838a6179aff1d7dbf1bf9f572af8e9e95b4ae99323d41a770d6f06. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FIBAR0100344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7c2e50b8540fe4fe6a3f236ad84438767d0635974b9d2fca825eb4992dba49. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FIBAR0100341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62667d4fbb23701bbc6b39040a94a1660fd822f026f6a84a30c28cec4f2b2996. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIBAR0100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbce19c25b50770b8451669fd5e2133ea45fc1a4a39e47049ee75db706dcb11. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIBAR0100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cb55b3f4b6b3009656fa54319429fbf7766593917e7546b9a301ffe1dfeea0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FIBAR0100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4f2a6301f40fb21aa6a0ab9fa5a43643fdddf7eec3a0777f167a3e910e45eb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FIBAR0100352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cde379b5079bb28daa8c0d2216e3b679ebf8533c36a235f0058617cbc4487de. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/FIBAR0100343.
Juhlat Alkakoon - Musiikkia Elokuvasta Rölli ja Metsänhenki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509e2e586ea06342a96745119edd846641aa0854e795e6598bfe1767e9750793. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIBAR0100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5f5c6961045aca1d36f28b67821630e31f52a724eaa1e99437ff4d9ab91c12. 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/FIBAR0100346.