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 0x410ae6c22f883de0dc827438472bb76171d05474d12a9c2eaaee701d07191ac2. 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/90b465f7-3a7a-403f-a4a5-ab5f7a0c1a9c.json and https://artists.proofprofile.net/proofs/artist/90b465f7-3a7a-403f-a4a5-ab5f7a0c1a9c.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 0x4753ef2b9b8438ef163aae0a76268fbd27d3b6a923b9ccc6f2c094ed7a1ada5a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCJPD2536240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01986e7e4d21f63e8a1543c0b190348c98ce6d4595861d19cc6ca34ca0e4841c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPF1741749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971dd5ed1b684e346f5a98f533249d36172e90921dc0eff0b240653a27073f4b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPD2536220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883f94db8248457e01c8a91ecea9e235fc89da605df1d6d72cb3ab7bf10f5667. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPD2536224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de37320b4c1fddf3872ac243a599b2a788f04a5f732b1cbbe8c6a9f2803a162. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPD2536227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdf7f72f4a9e604eac4ac0d10a7c49b1a48d1e66962ffc69c5db982d2ceb49d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/TCJPD2536233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bd59c9017fa366246f970961d16add7447d9e62918c80aaa9c4b807d014d0b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCJPJ1954522.
That life is wonderful / Let's play a dream together
その人生は素晴らしい / 一緒に夢を奏でよう
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5400223e104340b8ec561f43487f3226283f65303b8fd8cba2125e5777d02bde. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPJ1962572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe831ee324fec7d37fef8591269280e9426245ca102d2c632bce97ae006a3c7af. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCJPK1904022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed264507cda1151f7a489896e31d6d352f5cfe4586e8d8fd1cfcfeeee8746ca. 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/TCJPK1904025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc91345ba68010dc2cb48711067314ce76b6bbcb81dd75a66e5a7d4f22b98a7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCJPM2079880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac7c5dd51596cdd962c7d12c8cdb04297bb76e57382581ed169b353893166a6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPN2003487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eed54e2ef00309a72522cc977973502472e3c5155090a4ae4ead1de8bc976bc. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPN2029028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792fe563fcc6aa29c6b168ba483f363d126b6243fae14e1212a3bd4b5096eb76. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPH372300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4d053b3ab0ad194bf7f46d27ec66684de6a4c16109116c46ba44620aae6cd6. 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/JPH372300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295f551276da316260b5384ee3cb4eff7b5faeb0311048cd00d75b75c5c46ed6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/JPH372300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56732adcd0e7aceb1fccb9af42ab8886e82e90c5d75a26903c9a32426d508b41. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPH372300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab959f8042ed909b5d5865f604f22f9676683b2c322843e7172f2340f175317. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPH372300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e8080e4a4c0422a675f385e8e8b13d6706ea592832ff4e745a952e8202f16. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPH372500016.