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 0x0b0c3efb674a2249492169a7fc20245bd4d0522eac1002a2997d293f7a1cb4dd. 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/17a8f484-b2cf-4a1a-a968-9f78e112959d.json and https://artists.proofprofile.net/proofs/artist/17a8f484-b2cf-4a1a-a968-9f78e112959d.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 0x926a93315f03fddf926e064eec8a0bb0eb5fffd56a42a3d302be70b557a8bb2a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM99V1810401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f47f3d4e4c76b6b56ace875d6e669cc075a574301a9efe9a67bd7cad34f6253. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM99V1810402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6937b656700e365964e215fe1ff9d770fba1982cc6dee30bb2406d916320b7e0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM99V1810403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827cd186e79267f68c141ccc257732b88a8491415e2dabc72df5724f60925580. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM99V1810404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d62ed0ee20c72b5630e5765a7514735d9b58cff5f5ea93388c4d3d753d7b73. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM99V1810405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705ca299cc38d513f9091fe778af47d3d58d83a11374d47849ed41b1fe0f0b13. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM99V1810406.
Reservoir Dawgs - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0777596c61290243b4f07b41c4fd1a9bba753753f87803fa161ac3881096c48e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM99V1810407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b0854455ad0485a65df31de08cc877bb22de86ccc77a9ced207b2973aaecc1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX1805911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541f7c52aa422945e40057e8f3ef7eb89dd7d1bc93b4d620743c1acda8e11e1a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX1805912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16e0b934e1a57b49709c3f23a224d3694e62280009f9dcef9d5ef1226ebd5bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX1805913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e9b4120066c2345a99b15ced61546175c22a54fa3ebad6d2c5298378b6cd38. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX1805914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8374b21263f3658d748834e93f5921077f5546f2afbb78298ee74b7736e14b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TX1805915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5990c9fc6aaa4fb0f27c8ff38f736ad719ab42fa9535d9731d4853e5ed45afbe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX1805916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec67f71d28f45c642f9f256be0f41034411438b70d0c265c0fbcbc35cf76f2ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX1805917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5508bfe803d31b38f0528d7c6fe5f171eb739fac821605c4fbb5622b7e0c88c4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX1805918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10ccea0687d1dfae654da55f61770769492e529fb6f338fa80e2c3df6481899. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX1805919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83e61643083156e3c3d8c3aa0ff58c8db9c80f159e2c59037dba17e5ce9449c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX1805920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcacf724859e1841e08b6a45422031f87580cdb49eb10658d3bed609faef6049. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSMU2278647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae8b65be85731c649bf0f86353a832947c92e1efe6836ed5e8ac01ec97bdcdf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSMU2278648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18c9664063b89b2d0f9d167bb968adc8de03d2de1f6abca9def5a129102e787. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU2278649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ffc263d5ff87d2ee08a192e817e407fecd0c7293547a2d1a2bf1226ce9e4b5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU2278650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd42fd640d61073025bd98457529e5996de54a2bf8592745d3dccf2521cb39cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSMU2278651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a095382a413fe614c1a9fa97a4638c943a0550bbe272d0dddbc6ea39f99805. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU2278652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef49d1a77af010bf190f9fc7d2adb37b188f53253a54e9f4058e1cf55a54efb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU2278653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953deb8eabf4cdbe4914bee8edf7650d531f24c35f8ad166dbcac92c24ab4736. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMU2278654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541f7c52aa422945e40057e8f3ef7eb89dd7d1bc93b4d620743c1acda8e11e1a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TX1805912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16e0b934e1a57b49709c3f23a224d3694e62280009f9dcef9d5ef1226ebd5bd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4TX1805913.