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 0xdf24f279a83f68b0c9396162b203c73a83886cb310c972403606535677b565ac. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55b8be13-3e14-425c-8272-710e581c8f07.json and https://artists.proofprofile.net/proofs/artist/55b8be13-3e14-425c-8272-710e581c8f07.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 0x3211a4c4314ee872b2e89d1fa3d4aba97fa4907591299a053ffa43fb6963b255. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZMEN2129027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dafb09701020f2149997035405fdcda7314868c1b7efac31990da27d7a7415. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZNWU2119024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedba19356cb8eb22dab962f8802433fd6de578a48f8067810ec9061bf05a203. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2210203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc585be6206a850a20223684f35f6f08406484cb234840014392a6f70dcecf168. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZES52248964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401d907289028ddd1aedf1942ef0ce0800101eec65edc3acac75b3a569cbfaa. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZTB22209738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1d1d4f77b2d9957d4aa4300ef53cda8b22be431a7ba9fb8c3c53abd876b6ab. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6L2385142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6910b6381fcb111fa7263719ba6470324417ad1e4f2f2fccc8f254210c7871. 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/QZK6F2130093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e09ed01f928e4ef4f820ef36bf191f08491a9d588956630ad026748ed5db9a. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTAY2327861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1187ae615037f01c48c81b082fac587e478a64dc8e40fb1feaec45fb5bfb7aa7. 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/QZFYZ2466734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09a7480d3956ec7540626e3025f93589fd9429c2df81b9d79a94ef2d003d053. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA82449144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c204622afb05d28ed726516f7408bcaa6a2abfc8ff50a6cc541aad4d133aca0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN72436143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cffc7eb830b16ba15a49d1e4541c360fc6125b17d3d1f5992478416a94db6f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES62544175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce924b2dee0d6d939c717c692e2617b6a23cc40f922a6d1a8ffb9fcd2a15fdaa. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZHN32566578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf453d4ddac45f7e06ee7ae1446d493f6c4211fafd59eb3dd63ebbd6cb886edb5. 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/QZHN92551117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2732d34f866b1678c911bd534a0d9914e76bd6bd4fd57dbb06f2c6db303887. 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/QZK6Q2583578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e193fb97c3f48a0f38f551ee3303f66a307ce6385f99f847b46dd8169b34bf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6J2590106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb082545aadd69e4a879e26ae6d3a1b7428edd698c394c510b7dae2511ba166b8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZK6J2590107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2732d34f866b1678c911bd534a0d9914e76bd6bd4fd57dbb06f2c6db303887. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6Q2583578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe16af4eb102fe62baf702d95c1e8b317832a8b58bd172ca7e90ab756ea7e12. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6J2590108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a18d17c31eea492aa3d589e1c661153c2fcd58d7197ece945d338c831a59912. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZK6J2590109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdc2c5b91f9d97b1c9cc49cfd85d107cf787b7eaa69e69d099a1566e5296ae3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBB2530598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d711eb1d3a49da3f639d68b2f304f21be60072819371e7479326e2e64f5b411. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZTBB2532639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9eb92d6e852b94b0da6ac49b3b5433a955e1250bac3385ef5123c409e8a6b6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTBB2532674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e26c740ca728f3ca058f65765d3b7e4262f0af67c84a572f394ad4a4f7543. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTBB2532693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955b544c9a051ca2def3ad941c687e34d9845194b43782974c3cfe14669ad872. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTBB2534223.
Christmas In Eden Vol.2 Winter Wonderland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb936e52e09c8324540502b7b5629a0601f17b4b344539ddee1bd1fd18236075. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZRP42102725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8929905e544fee4ea9600a2ea79a6b0514c144c07ed9045ddcb21f077329c0fb. 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/QZK6Q2002929.