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 0x8d38a7b061607ac97745c3a810442f5ac2e4b920c7db08f232bb7da51b627ff7. 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/49394c1d-ebf6-4149-a7d8-cff84d092c3c.json and https://artists.proofprofile.net/proofs/artist/49394c1d-ebf6-4149-a7d8-cff84d092c3c.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 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 0x70ed9d0b33c6bd40b7f66359bd5cdba2c90eb477b9d7ea9aafe72709b4e478ec. 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/NL6NM2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3654016a6d85db1db93a136c8493d7fa2100aa00b07ea15e489954e3c10ef480. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/NL6NM2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7ec9c594831457e74bd8e93b8fe9018779849f515969a9484c6ff0ec63290b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL6NM2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecffba6e0427bd087d308ff3414fc948e625966ea3bb2d3950dccdc3e7dc822. 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/NL6NM2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ff4f4920f369d0b75a24ab15b877f6d3d4c10feee6f84bd4c58422d6169103. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/NL6NM2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d95a4c7b211e2c4e3f68a681f6bebb3a64d4d9b514d8239ddf9458b7708b03. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/NL6NM2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7209eab7a96c91cf0e457129e5217795cc8082299bc568724b664de5f5e9904a. 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/NL6NM2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27492e9f45c24493763606f1293247e4595f251b77264edc8df61b3501acc0e9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NL6NM2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca972f4cfb34518c6b2def616694dee10e58c627869352768b2e6db0425f529. 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/NL6NM2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3477b6c7cd4bf4308053e3fdb4088e53fffe2c45c724f302eb7fc881d7f5afc9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NL6NM2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c28c91531ef10eef1fcfc60ba6cd29063151e8d133776ffd6267a7ffd60dc8d. 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/NL6NM2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5798e6f72110bac58100ba9da33e4026fe3fe34d3d5f695a691bc9b043c632. 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/NL6NM2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d9534bc964b0871653d25a7354e9d66c653f61631f36306806bb1c649d757a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEY472085272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7209eab7a96c91cf0e457129e5217795cc8082299bc568724b664de5f5e9904a. 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/NL6NM2400011.
Dance My Way Back - Robert PM & French Horn Rebellion Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a417d1b14f4d117a3d9a68d94d7cbccb53133ae0ab1e18962f451b450b1b23b. 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/NL6NM2400038.