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 0x7b8da3248c0db414140a7c7bc4a8f99dfe48ccd496c2898a166674238f3bf316. 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/f3ec6e55-4134-4309-bcd4-a52cf30a1bca.json and https://artists.proofprofile.net/proofs/artist/f3ec6e55-4134-4309-bcd4-a52cf30a1bca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Greek Instrumental Music Greatest Hits, Vol. 1
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 0xac6c87e61d180d0cfe563bf656980094bc886caafaf9a9871796c02ce5bfc075. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QMFMF1585812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca935e6d05fa47ce0e8c870c3c45d58b0dbaf979da037a5b5d502d9d76406ad. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMFMF1585840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f23682fbef1b068e5695acdfe791be096b9af6bb6bf64d9553bc025882280ce. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFMF1585841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4441e0599e46c641ce46beca762e05a49fbb9c635a74daf750017ed4eb98c3c3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:07:29Z), 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/QMFMF1585813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69082e1dbbff7190e9e81247f46a8689e876c150bdd4701b4d55d0fe8f6d4c54. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/QMFMF1585826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdee5c968c2e28d66d261d1c7505d503f2e4b75a37563767ca67feab798cc74. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMFMF1585827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4a1c71c7114c343cf0c8ba8aacfc270949696fbf302ae69935c9db1a3394c3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMFMF1585842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8901a58fd601282148f5819dfc1c606a6833b4000d2598ee87cb997c2d1e8862. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:49Z), 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/QMFMF1585814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54d9a26ef311b9c68ba0cdebfa1a141b08d6f1888152c1d5f946f36e7dfaa0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFMF1585843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5a0f656b5687a5ebd9e54c91e190d83be1d06f68e3ef56f6c68f888447cb05. 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/QMFMF1585815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac43d459d135e20df8057410c4b1d644446aa18868b908b42c47fd4f1a364023. 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/QMFMF1585816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c78f63362eb5ea620309ed41b588c3f6b10b9c1430e9e4336875645e01bbad8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:10:30Z), 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/QMFMF1585844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd69bce54682cd38fd8629de301fff7d09c8ca828fc6ad4233ecc6e2ba47d69. 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/QMFMF1585830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10816e97396a10319a3a49ee3b82505f7e290bc882a41d224ec55dcb764eb0a2. 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/QMFMF1585817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648e70176d77443b32b52e235bdaa006ff655a4e49ead744feb89447bb32f1db. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFMF1585845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688dada83a81f692a51bd5a74e19b56e61426e516699b4ca6f7a3fffcf3cebcb. 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/QMFMF1585831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7a39fe6ed6a89734b6d12fa54519d9bfce8ef02b3a8baeccbdfae3b72ff7f7. 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/QMFMF1585818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d09b8f9a9b56605b180411c5bafc609694e2f5b422877300552a98062354ad. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QMFMF1585846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6830b742d158f3ec0ae702d232acd9320b367866fe3f625a4d2228e6453c1d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:19Z), 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/QMFMF1585832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aadcab73f31a70518055e7b3751e375dffa619ce89eefebabaf99d4939f339. 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/QMFMF1585819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30587c612690e1a77b5aa147e94184028d39a23246ce09be8e487f4dffd4daf3. 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/QMFMF1585847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e477a7ca931c6531d4c62eba8083f1269bc9ebdb4bd973e7a36f46e37e588d3. 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/QMFMF1585820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec191f7215440968dfd74e8ef0baacf5ce1bc962200dea332263732e766a7d32. 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/QMFMF1585833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340b5cb4ec2a39d836fce25da89237371245378e321739cecac0fb4145bf1db1. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QMFMF1585848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c42d27f526d82a019a2a36fc77189afa1d72ec8aea4a3570cf7c8c9eea7eb2. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:27Z), 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/QMFMF1585849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a1eb456b8b656cdf0e84f53ff64655c1367e4be8c256fa54aeb4b6ed204822. 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/QMFMF1585821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c98e2bc9fb63f19ca822acdd2353257613d9167d881f5f677ba168b580649d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFMF1585834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ef0238fc7837a652fd45e9de0db1494022e9a376031e7a4108fc311eb25843. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFMF1585822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28116349cfed2bea01231c0a37ac00632c851eaf9b09dcda96b6f42ccbde50b. 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/QMFMF1585850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fa061f7c66c8352321de8e62b52d5adf93d2c7f4b53a87a92216719dda2436. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:24Z), 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/QMFMF1585835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a1765c344817bb9861509defd240af6600a43a9caad767b536c5f3f4270fe1. 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/QMFMF1585851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac607d1703f022cc23c679fbb1099bf831d976facbcdb7f3a0537a00f5e3008. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QMFMF1585823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262ea1c549d8b5cfaceb2657cd824eb595938f56b1df0c156516a451be3d9d09. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFMF1585836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce94efa6dca759e404880a7de56da5142233f5b66a872209aedc1c0348099974. 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/QMFMF1585837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47270e9194a7fb5f4ff2124d74c3a3026155f903d20633230789d636784d0230. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMFMF1585852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014677d37619c62c59961ad8fe50094bac209b29fa02eb4faf634c8cb870f4ce. 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/QMFMF1585824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fd64914ea443eeb26716a68b694263ad7f01bb1952ab39ad2a01391b741c4e. 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/QMFMF1585853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3296ca1d1236b3830b80035eb4953288924dca7dc127e12373d1502b38cd8b60. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QMFMF1585838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d34c641221c87e1673c5ca4c158b7eb353097d55a5b09a98811e99ab98a3d9. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QMFMF1585854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd162766ee5e559781be9734d9ecdbcd5b7ee992c34db043c2d05bc9712dd26a1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMFMF1585839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba979c30015ba93725605ac1f865d92d0af0986784ff41ebd9d89cbf6e51e2. 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/QMFMF1585855.