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 0x51cd050952908ac15258e651f7495c4d399bcd37d95b90d72d52c2425b98a46c. 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/85ea76e3-e05d-4bf7-829f-3d8506cf1922.json and https://artists.proofprofile.net/proofs/artist/85ea76e3-e05d-4bf7-829f-3d8506cf1922.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 0xc74739b9d51c6e77ae45b0d10319367b60cfadb8365866323190d7d6b4a45b1e. 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/QZTRX2443467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025e10b070448ceeea0e2b7aa6daab54cf5cd50d42477dd15fda080220351ac7. 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/QZTRX2443469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709d9ade4a414a2da06e4c91fabd0c3b2be161974734be2c585039a034eefd07. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZTRX2443470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48348009f4ad68a858ba4398f1566fd90dd1339ef6757d3426ffa0a896a402ce. 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/QZTRX2443473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a1cdfc0c027c52cc1d380d41b7f72dd5f5bba9896cc0bc13829506e1b04c6d. 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/QZTRX2443476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfb621989cc0e189ddf70ab3e791221b07b559761b1764d389abac76eb301fb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:38:55Z), 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/QZTRX2443478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a836c6be7597e6d293580d2b97f84603c1e67b3e32e4f3fdc27f579a266e23. 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/QZTRX2443482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57eba6f865437da527592f39f26cc910dd827740e184f911e5ffeb1b686d880. 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/QZWDE2435801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464ac980615ceb9ee61836507cbdd166c2ac79841060fab5357f985fe91fee9c. 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/QZWDE2435808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20421079aa0859ca3de7d28994bb610a7e2dc39c7ef2bdd7f18d0acb5f56417. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:02:26Z), 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/QZWDE2435816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd7be1c08882ca279dd0e309e613a23bfcfd070b4759342a3b18cc4a8b67957. 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/QZWDE2435819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dfd8a4dd56d2994fa95a8a1ee084d69213d6e4fd94265ce952fa2199a74f7f. 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/QZWDE2435825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7061c123c7d3e0f8287083357b81dac11af35df2c2d4a6a8551a531c772f1f28. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:01Z), 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/QZZ8A2410477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caaed04d6e7f25a4d100225f3023dc5240674020d07abba2d71655679af0332. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:27:53Z), 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/QZZ8B2456783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794671e70b107bf266b00237865a49a904777d4fc48f632c73b3f090f6e2b310. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZZ8B2456786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c36984fd5e267978a6e000e4d54398411003922ebf319a7460577e530989d5. 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/QZZ8B2456787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90503a068534df388b3f2ba8387dafc7f49b1cfe313742eec5a2504c49220b57. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:29Z), 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/QZZ8B2456790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f6b1138b16313f6ef9cf5b0a0cdcdc5905e070432d051274948124190da5d3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ8B2456791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af5ddaa866f7e6d53868c7c4404162349e2c819012233b0bacddb91bc60b8e6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:52:00Z), 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/QZZ8B2456792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f482566da3c84dca53e2117e609a48ddd918a7098c908fb32981ec497ebb1a8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:10Z), 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/QZZ8B2456793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76f1de0c470f1a6520f30b3167ee00569ea0a166ed96625a88caad9e8b640ea. 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/USLZJ2586854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e24576d1f84d3699f09fc147f4c1422ce1e17a2ef472b73490ca2a57684bb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:27Z), 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/USLZJ2586863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2be14ca7e3e488672922a05b19341db637232728f6c523d3da9703d8d85f29a. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USLZJ2586870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb57375b1e9f49f829bdf52b088c926433802c9c610ab936ce5798a47d69ecb. 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/USLZJ2586877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe542a4506ea57993b895090df3ce521076d3c1b0747e49511b08b49ada41e0df. 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/USLZJ2586881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715cc12e8313df42b19655418753be78dfa8a3c9bb34e9b93a2430ea2d6b8fc6. 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/USLZJ2586885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef080f0adea15025358ce2ee12585ad57df89938111ff72029f70249739b7118. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USLZJ2586889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771e7597e1dd65002e3c7838da9f450e0691ead8881db9fe5e44110191f9e873. 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/USLZJ2586891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6221effde31871caa109762449e9dd44450e1d7ec13446680f57b92728c0b465. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USLZJ2586898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe517d40f4a9f29954c7863c34d29a06bc8da858e9e0b06f4d7755cf59954251. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USLZJ2586900.