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 0xb8521645e1391cb321c4cc61bd5d893e675db3c2a266056f019428ac90a3f148. 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/47e76440-4ea6-4612-aa76-9c2e8f46ae8a.json and https://artists.proofprofile.net/proofs/artist/47e76440-4ea6-4612-aa76-9c2e8f46ae8a.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 0xb3e602e074992cd9a813b60444ba45c62b82b81fc32b1827b18978c14e9742fa. 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/TCAGU2321131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b97ef7c76a2d6fb259978f17020dc74a142edeb90f74a0c39e76f2c61f62a4. 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/TCAGZ2300845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8233367301f3addd57bf4523403f0906908d47927e9ae6d779c0ad024945b7e2. 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/DGA0R2467869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718fddb8faec4dd09543c6748d775201ccb9dfb88a9242331225007e873b3599. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:39:23Z), 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/DGA0R2467871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e596be71a7c3fae56635589797fe2cb2f7d4c83d51716bc3a712440b01bca45. 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/FR10S2543422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aa9dc8a282d9cdfa4adc984e8f180f5908ac44050a270a9f7125d13ef974da. 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/FR10S2569526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2333963b22fd327672400dd9e7f876cf59c89ea2b16b7dbcc66ae50c80d45ae4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR59R2500988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee9c6d35868fbd9b203a7ec6459642db674206b3c709efe48dcc3f4187835ed. 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/FR59R2500991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26f7a23a05f6951b94eade3d46fa6aa8423ba521fd92719c40be2be14cc27a. 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/FR59R2505516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2057b7ee28dac07e37e36bbf83d4db402f598a1d8f70910f017dcc10592da9e3. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/FR96X2543113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82137f1e886f64e0aa33c428842be5aabc07c6f45ac2cda761f0ff824397021e. 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/FRX452593669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f64e5780dbbd1b22b1c31557eeb7be06bbd21f1444b5d562e5f5fc0a8ccc288. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX452593670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc108caeeb74fa0ff90a85e26be41b95c5ad624a926146be410a94bf84126c67. 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/FRX452593671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350a2b9ef9ee3e9ce7b26ef3cf37d35b631442b588d3c6df933b230b1bb53348. 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/FRX452593672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ec2ec387b62569ca4ac53e2bf481a6fd58b21cac38a437436c32e7be51a9d6. 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/FRX452593674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edc338d3afa76a0e0fd61f4ebe9093f845093d98afbc9c243d52f1c1cd559b5. 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/FRX452593675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac39eaa99e2f33db4d81eb480c7bded00a2b8866e68bafd629377a8e5fc9af3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX762564390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a0f2df07652c21efbeac9fe7da59a66c245706209013c13be742c70885845. 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/FRX762564422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6b2638bc0125ab0919819b583ffc9e35aa5e8581b0d22c079f1509c387b588. 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/DGA052552810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc048a0431f94c99393e2ad6980793b2793a69594501a9aa70892e4d5e6e8d696. 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/DGA052552811.