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 0x4973e987ac0f04dab8188a4d7f0208497e905b9da25ac4bbc115ca6b42cefa68. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb0d621e-bc6d-4288-92f8-8067e5717915.json and https://artists.proofprofile.net/proofs/artist/bb0d621e-bc6d-4288-92f8-8067e5717915.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 0x0e28de199e707718bd84cf14972d9f4b3dafc17e5bc0ca12e4a688b6b828f4e3. 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/TCJPT2290068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb861bacbea2102338042ce06c416ae2576c644641660f97f516a576097551f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCJPT2290070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2929bda4b8765039be90cdbd3f8e5fd57437111a2daba98caf6a5f858fd3d93. 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/TCJPT2290100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555643e62be3b1194d23c502b646ac491c0ba660026f7c9439fa833f9214e69f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:44:24Z), 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/TCJPT2290101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e714931c1c572ab669d7fd066075af62e41b8505f19984485ffb264563e5c58. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCJPT2290104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab84de09685525c8e414fe82254207376f965d1e780b42d6283f1b3ab0a75fc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT66J2567864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61946db0eac34d39ebcae90f35ca2476e4f608cf498d499509aef597cdc6e0e4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT66J2569736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4c988ab02de36c2339570340cf3999387d1e478bfa010d1f321a2a77bcae58. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:09Z), 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/QT66J2569741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140510869faeb37406497c5c9c902146d6235ebb96e526ef95dbc52d9d35c711. 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/QT66J2569746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a26c2241309b5f49645440080c62b4380d7f6ce0bd3516d127c9707ec0586f4. 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/QT66J2570019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bba9918bd52b3f6df17e599c2abf5148088bd5db76380a03227d99dc3714cc1. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:46Z), 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/QT66J2570008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14113157f77355f6d6b0823088e0460fe10bebcb074a60159f926cdf44246ef. 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/QT66J2569982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838ff498634e71f3b385e9dc2f16519abbdaef1e4d98d5f2aaf8358aa831cf90. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:43Z), 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/QT66J2570012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613557785d0a2133d9df6ef2a2d8cfdad92c75ddd5f59715a78365ce72e44251. 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/QT66J2569987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5217e1cc1ef40288de81a73bde42f3173577f8e5ff7b1cfc955773cdcdf04fef. 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/QT66J2569995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b19bc39926fafc608b61d180c3f63110054de256cfac055486a12a49b9f847c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:36Z), 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/QT66J2569991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67165b1545192aef4724723354369a6e8b0af80ffa91490c90bf3a5597b54309. 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/QT66J2569717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130d98117e4d560611d914054e957b167287db21627dca46eb0f03f3593ad26b. 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/QT66J2567902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf09fc34ae3dd8e46ceb9ddcb757b2213f2cbd64b7f83b989fbfa654e436254. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:26Z), 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/QT66J2569750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe431ec9e71f0fdb0480671d9b0f3d0914c462ac1e38c869b739f70644003e47b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:08Z), 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/QT66J2567897.