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 0x5e3caa769a8b765d3b67453ae41c8bddf03c7e2e0e03c2a282a0c4bf59d1d66e. 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/45e1828e-7a3b-4554-95df-2ed1e9632b15.json and https://artists.proofprofile.net/proofs/artist/45e1828e-7a3b-4554-95df-2ed1e9632b15.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 0x6577834b95d4a6676dff58403b82b6ade094c6c1c306a8e39581af628fa569d2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MX2832429646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd633be3940a92c2ff914b33a1d12efe7f789cc310efb331459188dc0d7be011d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:52Z), 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/MX2832429647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8723e086282dd80a3c1520e21597f242af9ea6ba7c4a52fc1c70c586028cdc7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MX2832429648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c874dba8b89a681cffb71013e6ae1f0563a0f89c1f71cf40b5e14c40c6194f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/MX2832429649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9568787c3eebbf63721bde321b8334671dc48fece6c7bae1b8351fed9dfe2a44. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:17:51Z), 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/MX2832429642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e17be2662b910c3871068fb4533c43518de4a54dbc0061d9997344ed6b4374d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/MX2832429643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a69b0159303050361d6784a6aa6114280d786816a500b023eef5b3e1046b0b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MX2832429644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8762eb9de5be1b08c98ab546246b23116bdea2eef19d1bb3160cb3a874face4b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MX2832429645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c9dce99fd439315ba5690f76bfa4d6cd0fb937742e8739972455916590af26. 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/MX2832470595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637cc98aa892e3d2cb47f97172f67973969af142cadb4a8c30672bd3486e355f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/MX2832470596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dfa44545a094eb662670aaed257e93f4330bb9683d9cd158f97dbc7ec4b93d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MX2832470597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5757979021ef1d991b22009c8bd451e948330549bc9fddc5e705532306535461. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MX2832470598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645dda60f8a45e3399c31608517d20cdc4342ab1a9b4e22917796ba99f6af9d7. 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/MX2832470599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9be4f1281e45b9726e9888526311fdce354878a10ff8996030fcc5ec9d85d7. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/MX2832470600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7fbae2a2c0bd76356c8f4c4e3cde62a3b482b91f78d7068c252f85cda2eefe. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MX2832470601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874cd307c6ad01b4d1090d5c93975d566e1ec4367478f739fbed4a8b0aced497. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MX2832470602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c22ce805253b4393ba3021beb2d84a69802058abc17d737b25526fdd641139. 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/MX2832470603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c109b4d4a3161632d62874629f64f0c1dfa7dc76ec4143672406356cba0921. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MX2832470604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4bc95752ca1d847a8fce1a6ff9f113c1a0eed0238f0304299974f65cc31aa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MX2832528473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7ec03ca9b69b05addedfac9add201b4fa05164c6b150e31fa4d01dad18394d. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/MX2832528477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aabc0d5435633ff41df626127b4e96b7e3b147bd0e7a69baa8e58e2003fa51b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/MX2832528479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cf02ecee8c786f7a877a2d92f0c27e40028eef3925b9ee406c36c72a7de6dd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MX2832528478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b6a27d47fed1af5feb0cdbb87918d60428d772825aa8c6ea5e40fa23c5ab9d. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/MX2832528470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ed78ec501c9f586642dcc60fe6d7df189c8d6255b6786d82e17d48436be7e4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/MX2832528472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd4248da6bfc501005d919558c1a0f8a0284ed9c049ac0293a439c5a4b3cec3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MX2832528485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c2b37b71202db435668209295ff9fce268ed34c90e0168d33f045d4710e40f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/MX2832528483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3085ff6ffcda84747c0d1bcbad03705069521f576e1ffdc7753159d77cbc2f49. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/MX2832528484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb11e1e8d44385c155f58e7c21a76599df638fdb2ecd5715576647310f4e38b5. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:38:02Z), 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/MX2832528475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262e27729cdc1a7f16c7f35be9efbb14f4d0ff0b1411343705ae341675ce64ae. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MX2832528487.