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 0x6a19bbd6ca5abf00bd86cf6e27ff884cc4105a1fbf2996642f2654fd29c47524. 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/397b5008-cd23-47ec-b323-eb644aece087.json and https://artists.proofprofile.net/proofs/artist/397b5008-cd23-47ec-b323-eb644aece087.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 0x9d7b76273ee25e49f5b5aadbe30cbb87b6e4ca1f508186b14f322882b9f79c5a. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZHN62119693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec0225862801a9d1bdae176fd76db390227a1127e3bda5dc2dbd296e645a3ed. 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/QZAPG1874654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05194a4197bef8a1acae923bc5de5213eae1fef2d1ee3bd47b3ea2921bc107f7. 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/QZAPG1874655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74b6ece25d1f55991996b79e99cdc1f181f32e457a5fd82a662f3171fc82c3c. 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/QZAPG1874656.
Human Beings Learn Best and Most from Other Human Beings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a5f4cb5c204b9fce05e2b3d5f5bed51fff684b0d9615b4014c54585081791d. 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/QZAPG1874657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38848208679d65b25b4809fce69ff8f1b3969d105b27c272db8419f6e95b7ea4. 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/QZAPG1874658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227f7be13c59de51c0f59afbe9320be4e25abe4f4e391cf23f357846f9121c1d. 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/QZAPG1874659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054de6696f31066cbf2d33a559b7e2d1a8bc2444eb34e91e638f9c79ab1e0b97. 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/QZAPG1874660.
I Am Just So Proud of All of You (Outro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc631152200b0a1bc2bc6d56e6b742d8d8554fc8c99c1206778670135b61c95b1. 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/QZAPG1874661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77e80dae235f645c1cdeaf855fcc1b1004d451c39a7013e3d8d58ed6ce9814a. 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/QZAPG1863634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c98d5217a2028a9600fbc98f37a882dbabcd2c65cf5527215403cb85816353. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/QZAPG1863936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c528dd2cb7ff4ec437fd22b78d310a4f5d2e5dba3bd2efc63f69de89e4ee46. 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/QZAPG1863937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e095352d1c9e3e8491ca8dafe0316bcd768c2e94c547e9dfa0169b83c64450. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZCE61883072.
out of sight, out of mind (feat. grayera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62a5a2aa03b02603b66e31b86e7f326b5107512f295ce3440eba58e45808694. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:22Z), 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/USUYG1389840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195ad9561a0bfd95f58273e876b3d1d5474cefee14e7bb89a0e2b401022391a0. 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/USUYG1488464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb4e63f3f6d0d37c963e72bcbf8bef2c593433c2b4aa125b61eadaddc6c9ea5. 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/USUYG1488466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd71e35bc24c28c78d6f668225662305f7977277559e0b8165fdacc6938845b1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USUYG1488467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74184d629478515c3f8bc9aad8eacd812fea8bae6186166a03aca2fd93dbd890. 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/USUYG1488468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b310091323de2fe4f23b4344cb1b5f129c60b21e4ebfff9a6528a96face4b4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUYG1488473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf04de8851fce129aa765de29a220c3f855076d05e6c423c9c97dcb3a4c948bf. 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/USUYG1561041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d4c6edd4ea8d647624b651497762975683e9c4c2dd7ed5f0977f36aeb88c3b. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/USUYG1561042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385f5c996a43048ac45f84f2385ffd78eb7fd26ba2cc7ec149de38e47ce73df9. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/USUYG1561043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ba3d2b71ed6c680e1ce7867d5f0c3469213511e9d9e124471483febbf5afbc. 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/USUYG1561044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8fae727b338adc0b3c2c11be2cf9eb8f274a9354d2c9fdb4e099b0c1153e55. 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/USUYG1561046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dcd9aa9a6a36cc12d3a95e5b1fd0162887435941bb5dba18b7cdea7be65c3e. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:40:55Z), 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/USUYG1561049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd562e79f430f056af3dd344474d63e7c4e1b60bc7bebb523950106254d9e4dac. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USUYG1590460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8146026e37692df7da10c79f1c119a2b7ab03c22c29cf33dc7108618eeedc0fc. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:46:27Z), 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/USUYG1590461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8578d20ccbb8c6884545c47e158680404294a03dde4a1878850994be26f7e1b4. 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/QZMEN2220851.