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 0xd94e7e5118425b3af8aa92f249a6c68f84f6c362ea863aea9f21046129f47fb7. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbfd2d47-ab12-4ed0-aa2b-2ac55de69a31.json and https://artists.proofprofile.net/proofs/artist/dbfd2d47-ab12-4ed0-aa2b-2ac55de69a31.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 0x048fe778d3cf559f2a7a1df52dabf39d141bb61383f4e7a76e0df4b52d099a7f. 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/SE6SA2316881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11ec113fa40668fe801e37357139c7e1fdfa43ca8565d1c96ae1cec509e6c27. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/SE6SA2383451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf11185baeeb442f641ed295bbba4da254c1acfe6021e7cd429e838bd11f4ebd. 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/SE6XW2344339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0fe35d0ba35599a78f61815dc960de383172a1ffbad38a76ca7c1564f21338. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6TI2336159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6bc0cf1cbaa85eef2206be9a1d16049fd0b370af6b0feee0019613bebd8e52. 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/SE6QE2391946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fe73a49c7fdf70314e2f8c7e192326e62acfe7f68e204bbb4fd06187457687. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/SE6SA2325841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3e7634e870a78594e151c6e1b6d0085e80ffc73c4d019a56f6bc2f668e6101. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/SE6SA2302736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f41a665b7e49168541de4776bfeafb86f25d0083b0b4e4d59c03b3ecbb979d. 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/SE6SA2348460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf717546db94527379bfca5eed74119e82773cfc18028a3b91875c8b605bb9ca9. 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/SE6SA2339273.
Devio le kpo do me (Les enfants sont dans la rue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fa587d9acbc067efcb9c6fa928d96c166170b8bb566cdca4e54c2bdbb2c8d7. 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/SE6SA2363299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e19f8a58b7c9dbf7f7b42c472a111d79027e6feba29d872f5b17425fc01c73. 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/SE6XY2226871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a6341581987a2c8c570ba2bc318bed2863f76d7d5c0c9835001fe139f9c70b. 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/SE6XY2226872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90d1be02dc9cf039d19bb688b7839e7e20a1eaeb0d122baa42a1ad44031fb3e. 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/SE6XY2226873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3994f520873c5f9f5925997318647faa4fb630c54d5827259a32ee2e350e16. 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/SE6XY2226874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c7a433cabb03beefe3e79562ca42b6eac1fea614a033d169922dda334f3d41. 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/SE6XY2226875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46a5138594a8d5f4d51d531382084bca33d73798cd85ff782b2b0a6fd1fe27a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6XY2226876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde892a807bc6910eb8c87acc3b06d07884060e362b9bd3ee0152dbf6e7d363. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SE6XY2226877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22b12a217b9ac4267d27cef1bc029091d2d1b0711f603a9db578145312d2f5f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE6XY2226878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92281dba51ccce232590fd7e66ed5f87642f1c78347dee6005275a9bf94a9e1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SE6XY2226879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15041d105e81f873ed50c76971aaac70ac04e26e9059a3e6766f4dfd958bbe11. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SE6XY2226880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b79ef8158b8459c12a685a85e5094f6ed4d54b7c7814a3acc76b736b857ef6. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/SE6XY2226881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd2ef986b6b266238f208e51ee2a2e34c03289ee19daf634ebde59fdd8d205a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SE6QE2218304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04402fed5d33b40ed04c92b9194a16c9661009ef77db456ea61893ec94f06975. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE6QE2218305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66212f0b2904b8c30c5f8b25db9bd8b016226556b95d2f0c5db3da04d8ad45e. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/SE6QE2218306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804a3247dc50d2f19890e2ceb7dead8672e0ba71e8d4c14567a02fde84891f69. 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/SE6QE2218307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49e2539a0ee6b8b518bad23eb939467e62cad7211181012008574c14a82840a. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/SE6QE2218308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe902e6c9951c67c576a5537c8c7b2fe0f36831590af5c99b29b845aa774ae8ce. 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/SE6QE2218309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2778a2d16569017aca58acb72fe1203781c81922a07fa18758ed25204be842a. 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/SE6QE2218310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4ebdc38e6003d961965985c3ddad4eabbee1820a7737d0604bf44f293b670f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE6QE2218311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3393bf6fda2bc9832c0f881f3a88200cd9f707a87401c3518038eb8de5b9e0e3. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/SE6QE2218312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf268372cafab114dd5107fe041b64b89a59f1050c183b50335eff65ca341928c. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/SE6QE2218313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f982565e200a7b5518e2fb1434924eeab8cc22834f5275e5a90a2e3e5093389. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE62M2346636.