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 0xba9f65a5ddb375040bcc644dc59cdb1c2c292eb48b2317db78ae0c40583f2d40. 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/269ec0d6-2495-46a9-99c7-fdde3bc6079b.json and https://artists.proofprofile.net/proofs/artist/269ec0d6-2495-46a9-99c7-fdde3bc6079b.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 0x406187a5f7363e2447645561f25d0c2d6759afd7de64d46e42b02704e5b4af17. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:37Z), 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/TCAIM2446670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a7ad08baa0a2f2162559e2d490c3c5bee120329f4c45400e443f265f02e590. 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/TCAIM2446689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecce0b0b7094abac67b2efa102cb148b455ff3a2aef226c5d1432c75ac364f01. 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/TCAIM2446697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad3f7b74989f3e399b3021093817a277cfcba38f5bbc3ff64667a2f54335a49. 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/TCAIM2446699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bb05f5924ededf8a9c4d815f710feb98680be3860a128c4ac0f50ad18a3bd8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAIM2446707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e51fad288fe79e95d280d3c54b57a4f6b7be3550a506744644f3471e2e2e07. 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/TCAIN2446717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd65564d170e2af352864ee518456a0f8c2fc9674c6f4152c3a29628c496da7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAIM2446728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9af8dc4efa657b360b96b37d55658241556fc7b36a11a75260fd404ea7961ad. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:18:04Z), 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/TCAIN2461353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240f5f6492ef41e2e4acd94a6d5ae4d22955d823ffc2a7400c78ce48f1c25a3d. 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/TCAIN2461358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2534be4902b155ab2aa819283d8fea3c824ae269f1ac0db72df123a8e14ddac1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAIN2461366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ec67de8d9296d633f07552e5e7565dbee239a4dbf9705be7b0eb4ead7177e. 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/TCAIN2461370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768a3e4a8dbd357e4ab175d6fcaa859ae7c11dbc53a793de38a77c6300d9b898. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:22:53Z), 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/TCAIN2461374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c41637de03c9e1add4db1c694e87931a0136a4e835e45dd98674b66f46d06d. 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/TCAIN2461378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455f93e8b09efad24ae4343652739a88cd55dc5108c4ce62180d36a237bb255e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAIN2461380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfba6a1269b6395829f8a3e79547b2d6305193afb9044f565023c07ee199983. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAIO2461386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee9a136b6008fb6195b01076336c8cfd9318c723c3a2c1e3b75c17fd4437e3f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIO2461390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04edf70d7f4e7dc19ad11f8189969f7cba4623ebd0d74ad8150852449a1c737d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:16Z), 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/TCAIN2461392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129f7088992a5eb01c0b867de06aa69c9e2bca74f6f15c629e83746b35f2d97c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TCAJL2562080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ba7a90277457c505119346ba344a85c0a17ff8a85ee908959bf6de9c9dbf47. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAJL2562141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d848ee48bebf866a8727c70f048631908ef1759b25cc16fc02fb142a3081277. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAJL2561998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f54f1e4f1f72d837625cd18c307e0afe59ca2b3e80df88d18111feb71d288b0. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJM2562071.