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 0xe2c3bef2ff1e010e2bb85b559ffb844d79945c4bd99623296ee59ff76edabda9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/652bc97a-7fde-431b-9ddd-c23674da24b8.json and https://artists.proofprofile.net/proofs/artist/652bc97a-7fde-431b-9ddd-c23674da24b8.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 0xd9db8ff22d84c626663e3fc8f88995bfe0352ae78960438b548d6ced2cbb5ae5. 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/DKADG2000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b62b5b532195027aa8f4ad978842769fe85366595a49cce7b3f0f079fb1ec41. 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/DKADG2400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ca87ef7e55a9d8382a681593fc52faff9d2bc2ccea10ec85598d95e8651671. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKADG2300594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c234e99271469be2bcd6731e848fe71f080b1702d55754a560e163ca2ba4c0. 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/DKADG2300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ca87ef7e55a9d8382a681593fc52faff9d2bc2ccea10ec85598d95e8651671. 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/DKADG2300594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c234e99271469be2bcd6731e848fe71f080b1702d55754a560e163ca2ba4c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKADG2300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c234e99271469be2bcd6731e848fe71f080b1702d55754a560e163ca2ba4c0. 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/DKADG2300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67347ebe581b381105ca3d61c303194749f13b62c2f490103bbc5a061cbacd7. 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/DKADG2300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1acc273658ad32ca13a2135bee702fa50646e4e5387d899cb0529f3735a1203. 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/DKAZA2300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7ae0126d37ed013544caa89a77745b5327a3760ce09dcb64ac3aaad3755644. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKADG2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc032f3d68f864c78dbad66d8bab8a971188572792ffbe002ab9a83ab640dccd9. 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/DKADG2200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417a992b798d18456cbcc7e477ee1eb3ba4277f59d3aa4dee74611ce5ac62c7b. 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/DKADG2200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e5efeed90cfea01370a8a8e84d7deea3ae1364b02f3dfd955d8182c5ddde20. 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/DKADG2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6280e2abc7b1b19a0b0063a944c201dc824775987a8d3dcc1f63fb1c4f0dd822. 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/DKADG2101054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8f33027e811098d03374574dc89467502d48f154c1cca4a1de461a8e1409a1. 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/DKADG2100431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7ba1a54ddad08c1e2d54f64c4eed19d41e796e021d1633408a80678f37f27d. 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/DKADG2100346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5ca1c750fa4d42e8d29dac2ede91367c099c56f1c2ac3d373cf853276e164d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKADG2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e6001d153316654522c2d88e08c56223b5762ad4c94f8b11be2f7c1be44bdb. 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/DKADG2000933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ae4ab4c03cbf3d3c062e7d5434f18100ca6cd132bc85264058740869565b4b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKADG2000848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9f92d8ae45eb0e51476f772fd8c3c1817a5e55f04c2d51fa76e348c32df281. 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/DKADG2000451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6a2fbd8e00fec75b61c7a0b20b8461dffb166ed74ba224844dc5e1e301527a. 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/DKADG1900185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0936a894850b32fc72c31d8f2e26367dfb124ed9cc43a64d8cbf38c1afc07201. 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/DKADG1800735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2645c93e76140d30f720f5cbfecb8a7b751dca46d2e072ced9aad1e348a83bb9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKADG1800440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5a6a066fda62e76f0536cb8d25e15cda9c3911f84917a92a6127b63e42d273. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKFD52400401.