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 0x12f6f771da2d0f8076c5248a5743b513808a91abec59054fbad9a33be93830dd. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fb0db57-db54-40d3-96ec-616c502e4b1e.json and https://artists.proofprofile.net/proofs/artist/4fb0db57-db54-40d3-96ec-616c502e4b1e.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 0x6ec8cc309e4a95761d1afd1dec9d541b9c29fbeda1d9ee42c6a686e19939d450. 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/ES71G1709368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146a8cf444081c45d06e7af85cb4d30b6200c2412e42eb9b3e7675be7d203dc0. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/ES71G1709370.
Do You Remember Rock and Roll Radio (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa628f4675220b4ce3dd67d5b18d3abec70ad79d8d5984b595117f3e5a59ea435. 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/ES71G1709371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd798f0128e15f016b10f23e32a79058ace36534f5064c9bd071b14b0b177345. 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/ES71G1709373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451acbecbc1b718561f6b5532cae6ebfefe07f16441592944ace38bfc4562a7c. 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/ES71G1709378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323cd55ff02f7a6eea63cd66aa141e33549ebccce7bed2856492ebe0d224423d. 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/ES71G1709380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68571ee243cf4063b9d65a9e92bdbe22738430964ed3e800db9a9b23c139f55c. 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/ES71G1709381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227293fb2b16ffd38272bc3ac0bfbc6cb8c79724c76a01f82fd604bebe7995df. 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/ES71G1709359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00b90f97e18fd1d426a4ef14f72532d098f0b3d784d3c6649e52b78823e77ce. 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/ES71G1709360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13e1bed33006e171b602f4bddb0448d94ff45e73af1e245a5b045ab865d74ca. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES71G1709367.
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 0xa2fb356f6ebb2808b5dfecefe8a677c6c2a39a21e8098f5f439e55ab1b07c9fe. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ES71G1709369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1504cba6b3368659aef051de657a8155537c1c9dbebb2e7cd62206bd6c8beb. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ES71G1709372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb74ee9f44420aa6308ef3c68994a4b1ae367b40e76f79cfa9fd69a1f032dde. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES71G1709374.
Somembody Put Somenthing in My Drink (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba707981af99b46e3aec23074dafb7db8cf1200d30db6def8d913471c34a404. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES71G1709375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120004d76f81f6ece7d0f9ff327019afdf9036b5da03e3426b6bc24ad1d5e4c9. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ES71G1709376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce09fce2424e42eb8cd9916eb25b98620e0b2c0bda3add6c65b0179bf6b09544. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES71G1709377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7226d2c8cff934922ee96f1a463ca04f6e3e1073f7ab6541d46300e8bd3284. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES71G1709356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9596d76a8379044b64ae5c15014e473332e6a0ea8f830698b6b776312e11ae. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/ES71G1709358.
Today Your Love, Tomorrow the World (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd22fc49ce9e20130b1bc758c32d9de3f629994201e91ba9f87a8e100ee7871. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES71G1709362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf763006096f55575e79f3bc7ab6c09275ad1df15b0d923f92d216b8240c3c2d2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES71G1709363.