1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xebf779f26c467613ae1e075471c43e999f8c37f555e4a05c7912f3f9c8142b8c. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdafae8c-acea-4fc3-acb6-f15d32791d2e.json and https://artists.proofprofile.net/proofs/artist/cdafae8c-acea-4fc3-acb6-f15d32791d2e.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 → block OTSBitcoinBlock must exist at that height 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 0x2219d21e5147f2ce8e067df70a52f77c3481063dbb1015a1e63e9df65b7f7f3b. 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/NOFLL0406180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23032ea95a3a9bc6bb6b52c9f062a794b45226ef3adcdfdbc62a0e1c93f436d. 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/NOFLL0406210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c73c7d50e08c571de4b49322b9314bb514e346d0b6fc838fd3d1b130257ca0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NOFLL0406070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3aad0bf7b1ccb715c0f56bdc2ce66ffe74b1580c2a700711716952910dc866. 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/NOFLL0406090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f690796ca00debc6c2c53c7245b453b9d686fe2e8f84d077a169317831b8446. 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/NOFLL0406110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff275311372c6e926a007b6accc97e68f181edfe915d5ae74d36126054d5a39. 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/NOFLL0406120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bc1c6dd66cc1df7a0e717ea96bacd74131f06bf346cdf1daecd79a13370a6e. 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/NOFLL0406140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1b0b211965646d33a7cfcdfa2b28b71cad223f081d0c61022f6995bd174c25. 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/NOFLL0406290.
Hjemme I Himlen - Leonard Gudmundsen Beste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc123537c736f4c43c918ca9eb7fc9b8d9f345235477e264aa0496f337eea9210. 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/NOFLL0706120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16cc322b11e17ebd08af968116106a424d074a70018f8aa90559ef3a99c0f86. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOFLL0706160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e2a16472e585cd444f1989beb2759557cf9f88b76d38a89eeddd5c656d79a9. 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/NOFFL1202050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b713bba97026b296882f2c7a8659646b82ef3da8d33dabeb53c4f452637259. 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/NOFFL1202320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada3c84ba49c97135e178aa41c8894248dc92d9dc48c7c615176cfad848a770a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOFFL1202330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdab2b5ce7c6b73d2bbacc282356e21755bf8d4035b6927eaab53e82bcda93e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOFLL0518050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4881406a443e045fcb25129b51fefab3ddc56bdcfa043d95f529295a51f48e81. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFLL0518070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671a9147adea0003dbe7aaa1b7b42975956ee466403907a3d1fe2dacaa760f33. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFLL5833040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07304aa48ba9c7302cfdd345d92c009957456d0c05d0c453066bc7d6be182ea5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOFLL5867120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5943e598370e19437b7401c51e442f476bcdd8d07acd21fb510fc4307ac4400a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFLL5867130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b988090fbf52d7315f9625bcffc3075af79d2b4ab37f89e1c10b6b9f74aa16c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFLL5869020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf25c599bf0193ce6423b56073539edafaff59f2bbf8ad1a46b22ffea4f279a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFLL5869070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a2e6c3c2e18c6a40a18a3efe2888136d4de1a1678353cfb453a6f709ebe659. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFLL5869090.