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 0x4841d72dcdbe7b0247974d4874fac5f9ec3c445de19ea4fff787341f8de9ff01. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa860567-3fd3-42f8-8ca8-c9117a4c2ed0.json and https://artists.proofprofile.net/proofs/artist/fa860567-3fd3-42f8-8ca8-c9117a4c2ed0.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 0xabce66433d5973b8bf23595b5fcea712a45775bf4b0f29028cccbb4adf786089. 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/GBMA22453746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fd068957487f6639eeea4e391dc83578a06912bb719d914a134ac69bbd5127. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBMA22453747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d472a09c79d278ac8d42fc2382bc1dbb404c4fb9b975835585815c68d846f2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBMA22453753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb738eec740de8a386e7dba2a82fb4557f341965b20694fb112b517880427bfc7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBMA22453744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae708abcc751ed3600641ce0dd07e9dfa8db1e4f9c9ec2c11ef92449989b67e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GBMA22453749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107130b94fe34ccea4565da45ecbae8ebd7cca80d3c4b5635024443a5190d63d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBMA22453752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bb427df2b65e3095724ef91a59733c7aadc661e376212bb315bc07e2695286. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22453751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22240c89a768157c67e427a5b57d49c8512a4cfd14d88bd830bd6841d7042db7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBMA22465939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cb8ee097c9743ab03c3f740d9b5abed900bbadb13473774543047923e8e08e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBMA22474703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0965db2097b85a4487004abc4eaf8b89183f3aed7e2b54235888ffbf8f123f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22474701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51b237ec90ec9b752ed9e16226cca2cfcc3cd4dbe5377cc4060c0afa60cf0a5. 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/GBMA22470646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37712389c93e83c1a954e270630f2a0023b2016ba74e7deab785516744d3bceb. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBMA22474705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd37c1d51b9801baf48535b5b77f3555ca51a2457e68dc75199c729dffde8130. 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/GBMA22474702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5472bd99d1ad18b8a7e44bc79bdc51c8ffdc329e875cb40b5afdd139ed4634dd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBMA22477839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3ecb23463fcf58e5bef9f857b632aa2ee8355e7ac1d7acf8bb855d58f610ff. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22477840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4da61d22b841a393351a3db8d05e821e72b90833f1356ddeccf7a9ab21f0b97. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:50Z), 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/GBMA22477836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032c149c26287d80d0885c35553889ff4bd85e008306d7e5dc4297c998c6c703. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:33Z), 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/GBMA22477841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8deacc3cdc26710834f5bc5fa6a0aa26652e7a789c9c3570ab30bef76804dc. 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/GBMA22477842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaea1851a2b32a9612784b98e8577cc44c8422ad5424cdc0ed10e42bf48c4b9d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBMA22481988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cac2ea81096ae0fdbf2594f0ea6f71d9710c37e6c33bcedecf8fc8bc551f36. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22481985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfb9d281b212f50379366ad3ec0027c9866f6139d431e46ecef3360f12234cd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22481986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbabc728b08d23e5948a60fcf091c5086d554c4da58c40bcff0741d694e3473. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:49Z), 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/GBMA22481984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b5dfeccfc8633e2a9102fa3631dbabb1369c32e3f1fe21ccfa50dbf42874df. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22481987.