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 0xa0e12376acde7d04c9abf87daca576e1029f63ba27c081a2fa2fdf2cc602594f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b15b2b60-3886-4274-a656-2c015fff4801.json and https://artists.proofprofile.net/proofs/artist/b15b2b60-3886-4274-a656-2c015fff4801.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 0xbc1608672ef08a33c4c5f017cbcbbfb30ff95fa3dcb29a1624e1137d6f264cf9. 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/QZMEN2221222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865ab8eb08f3eabdf24e3f122bcce04e4b1a6d37c8d43463f338eed14f671ed7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2221223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47d5d97522a8c10c9d059501a738b974d63db2ad9ca13f6afdf52e240b70252. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2221236.
It was a dream of a "green" dolphin and rAw celery
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe553a508a43b592585fcca4eaec45409645f170d010386e308a481d47dd852e4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDA72276453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ecb9605769852c6a773d679058dd70e95898ea7a1f3a2396b630c70634c527. 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/QZDA72276454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53561f60d8e37f0da2bc858eb49609de5f69bff6ebae3879780b294bdac8b4dd. 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/QZDA72276456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a66306d57da41540858ff5bcb56a35b023b0ece2a99d653023c63e5cca26be. 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/QZDA72276458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093574a395a714a3618b7225a133767443a7a0052d1a8cd2e1cf856cbd68f79d. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QZDA72276460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e29545fc4f932d56ece556d522613f87b6a874866a395a21769ec2410ca10d. 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/QZHN62224898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1706669392eab149822af01a01b768ef9dca622b58900a8e06c43087241f10d9. 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/QZNWW2070451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b242b169c2355de67d88f620272fb475f23067ff7273c1907049f580ae3a0d6. 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/QZHN42468678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f961603850bdb464c6128be75d9ffc9c304f00d6059cf4e30d48f6d71f8ddc. 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/QZHN42468685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ad36b763f6845963d9ef2eca73d0f01bd9a02d4f6f19bf9b9f579c5d2b59a8. 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/QZHN42468689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65430938895fb1f589adcc05f7071e47767548dfef5efdd2eff238a7ce6cd557. 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/QZFYX2387826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c1eceeee4f0badadd0ac9105ebe39f1d93cd9445bcf14b399f44006db73d8a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZHN52462318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cafb8aff125aa7e473dc74f42351e2b0ff81ed7b2530ab7773a5dd72b41ca00. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZK6Q2334362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68defcc0a5c49a8a92da523aa2f130a33b9278a72c76cc06af80566865efd472. 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/QZDA42411966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e416a0db8ce3a417d29f7c2f68c359ec58cfc95d666ef73631fb4418416e196. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWX2296250.