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 0xf7b3d034b3a5c422c5121b5f04e541cf28034b156b2137a20ade5aed7e25878d. 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/bf2c679b-014c-4c0a-b737-d118f58c95ef.json and https://artists.proofprofile.net/proofs/artist/bf2c679b-014c-4c0a-b737-d118f58c95ef.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 0x5d1c17b5d81a6855b724bc36542264068badc9fd714b60179334a7b5d235d382. 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/SKA012300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0c5faf34ef2752036bbb965a9ae6b5026c1323833788b5a59b223877c760a1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SKA012300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbee8e0ea166feb273b9b13169fff36275b96e985e066116787572394a33c027. 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/SKA012300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead0c0647d03680f106a8a2bcd00f35536feb64951f1c60de2d7b137ce8adf90. 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/SKA011900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ec408642907d36ff55e719de304502900038cf3739212deee457a5c521d1ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SKA012300453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379df30605329a6f7fec874d6a3b62e8b1c56e841af798d630c98cd015a77920. 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/SKA012000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88341b77ded25f0254f12710b3749041573161550609dfa5c95361a4bc97ca89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SKA012300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c37487b4b8c7cac4310dcc927e15da936b671536e7e2e13497434f57470113. 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/SKA012300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41898e2eb4407e8eb260b1d52837f941e270c237061489574dda31d491c53735. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SKA012200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa840643f8a1db89b05bfa98aae1f9013465d96a824413d1537b2000e1ab8076c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SKA012300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb665626d5759f2a45f008ff72d73fd2901e5b34ee042599bd18da17cb179411d. 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/SKA012300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67f2d16e79c742d9cff28989907b9866e72d913999a527e1f8b0b9f4b71c669. 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/SKA012300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6005295976a69dfd3dbc6c05bbb205f5bed33f5f0dbd43f011e96bb7ffb4cd83. 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/SKA012300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1339a33ce2df2da4af658df452527d47e2e3ffe4fe58c40d6465c339da36a374. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SKA012200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677b3dca24a19d2810b6defef86421748e83f220aec856fcee6b59543c7f28ac. 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/SKA012300292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faccf1918d527be82c812d3ea6b519e645e758cb08f76a35e56cb8a76b0fb90. 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/QZK6N2011454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89cba540d3375fb25168e2b16474bb718cc4f25416a0fb8fc258bbe5fb5d206. 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/SKA012200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb06048a1fb83ecf9e1f54f4f3eb7067901be8165e20e3abba0e6517b440bea0. 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/SKA012200067.