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 0x03497331b1c493ba96acf64d0715d7f53ad6d87d38142e0553106943c6ef8829. 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/eaad1520-4094-4a8c-bef0-31cc543b527f.json and https://artists.proofprofile.net/proofs/artist/eaad1520-4094-4a8c-bef0-31cc543b527f.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 0x8f5c396da53c99bf250e5d27b22646eaa406dd97fe2d33daef6f17adc3e1e936. 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/FR10S1926628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783876c572666e37e51bb41d6f033dc8cb25694d1a07ccf3341dfda5d14b84a8. 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/RUA1D1912515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4fb2825605976d5410d2156c21168f6974f6e6e6513267f8f8941ff549e0c0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUA582001492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebba49e55d41576c2647922e873934a71a8563713966431985b97bab12c56d4. 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/RUA582001494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30878316b5454870e5d87ee43b38006c53f288f325b2e18aaa198ddc9a4c4ad5. 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/RUA582001498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82658df29fd454017a8693789e26f70ea5cd3125300348d3040aaf5bd53a8584. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/RUA582001509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adaec13bd12728f85e385c9d736604c4d69d26960e035848432ad7e761d1e4e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:22:05Z), 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/RUA582104781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d91d182f3872aed1bfbbf582e2c83b53494247662c824d4be7a948daf7a7bbb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA582107036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ee61f217396d303c5bad87970771c7bab06a2c44a51cd5b208416943fd85e4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUA1D2256094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0382f19b58ab7bdd2facdbc39ab08d184bc36abc5dbea39a3be9acd62669a0b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUA1D2256096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9373937341189f3b181c10dc6b449c3ed33e215e32d06dddccf12d3ace8475. 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/RUA1D2256097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81856027d39fb384c4146977460712b6acb6065da9e411509c260d0aae5767b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:24Z), 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/FRX452151096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed74e078f8c47daddceca6d11fb74e9d0c28ded198c7b2b64ca90d4f63d379. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:39Z), 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/QM4TX2305630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3e701e7d8b50dbff0c5b298cb3c1a43bb189b395540d7aa66b7e66a863fe5. 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/QM6N22333828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8177345b55a49d2cac0f70675922c0c727ef772f075984e1c66b46d89fe97cfd. 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/DGA0M2477774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d133868f8ae57ce8c46891807c70792c75da6415d29d665dc72dbe85bd6af1. 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/DGA0L2466827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9772febf30a14e9a9e05d37bfe86e679105a97a15bbf0389d859a7d3fe8a59ce. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DGA0R2419810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae2b66bd4adc43216671866711a29449ce6b33294c1749897fdffe7dae78318. 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/DGA0R2419811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0e096f6375924e08da763e9ebd14a26e726e75ed7812070ad2e98ef762e432. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:05:59Z), 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/DGA0R2419812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b026bf31b0e5c27daf98eecba7d58d0eef4c02bc1687f6fc18bfb3816ee0dcd. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/DGA0R2419813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f84b6f29c3d51a59147f87d841e66314a3f2e6268f61707dcd8c6410858d18f. 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/DGA0R2419814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906cc8957d980fbeb0c69ac083a0def67d8db0778d080a1d4be69d0dc2b6f040. 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/FRX452582298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba23ec06f4865ebe35ed125ae85977e6cd86951477470b8d2af26dedecec4c4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMRSZ2002584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461a3a43685be82c0878faa7d1458043c078d7c4ed67e33e101dd8ee61cff711. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUA582001953.