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 0x4896b10d1407124d503067d5da7f8e85274afb539bed0595f0248df4a0c0604c. 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/bef75143-2bd0-4f13-8035-e3b5c2302155.json and https://artists.proofprofile.net/proofs/artist/bef75143-2bd0-4f13-8035-e3b5c2302155.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 0xf6c476f5bb5a9da45d822b02cde562699b35d3194a2da09a8b0e812537d6d989. 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/TCAHT2456405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac963da1329c15a7fb6990050fccc86ad149565ebf66e696c1715eafb4b973c. 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/TCAHI2327647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe2d7b3aac7e72f26b70b30576ad9600dcc026f22fbd86947b576c1b487c95. 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/SE6SA2300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290dfb30ac032dc1d84814400e49f5096a425570a65a191e6f4f315e6e08e7c2. 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/QZNJX2081746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbeba618e228d1dbce79a98afe2944b44b3694012b921bbcb91c7fb06dc74fa. 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/QM6N22075978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424de436eb4bfd69144cc9ae43857b5e6aabb0603ab5f04766da78fe30e08371. 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/TCAES2066119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf9d20e89090f491dbb066143f23da23d22ab91e735a8c422eef0b7a2f5c04d. 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/ES71G2220385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6deea7fbd71366c55e94e9e37650b2ad8a663f70b997349c8c1699b98aa5a1ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:26:58Z), 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/AEA0Q1883204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48af2ad29a77b278bda6492d40d89002659a0e44518615db3086bd5483415c5. 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/QZW9K2498665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23f4fe8aec0545257ce59b51a39b4679611cf606ac43fa2e7557bc21f8527fc. 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/ES71G2418382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05983bef2936a872be85e590357d1d6899a63336a0a89d7e29789d04da3d2bc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAII2418332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d558666865b1bfd71ecbdf6079ac22676c5da701fbaee61cac852699af489. 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/QZNJW2425828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f607f920a9dd0a8dee9c07510fa9d4a51ad5b50ad30be7157c90587d19c719. 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/ES71G2302093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15684dd71387c321a346c68153342677015bcd87fe9fcb13b662815c03e888e. 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/QZGLM2315273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0df284da78652534cf0966a9606d51d9574462068af9067b858ca1258ff538. 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/ES71G2211208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12a259a693d98c776cc4b097c5da520757e35e5f5b082578080de7d9d5c16a4. 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/QZHZ62167611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23195a5d586be5b4a0790ddff1292d4371c289125efb5d4a1cdb7d728541fe05. 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/QZGLS2199113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5334569ba1a446b4d5052de2feb1ad661321b85722b5e7631ece598ed9bb20. 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/QZGLS2135394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942e3ae9c280e422d6d6d657817300e7166d9ce2d3a13f7848bc2a545c3ac815. 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/QZNJX2000675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02eb9d4368967d739da0c6c653c61cd0586c48021f87b04877f2c7b66a254f0. 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/QZHZ62040766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217e72c97e10b3450ca9376b56713b1b96ce5c133804e05c90ded095bdbcb6fe. 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/QZHZ62040768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fd804e7ee87238ae949cf28cd8c20fd2cc526834f398b00651dc9dae6c13b5. 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/QZHZ42044162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fb694ab969ce7e9e42d550bca0c5006852160b5fcf9efcc35f8ca736278105. 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/QZDA82046437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6b557fdb252451bbeea0a16022cc5afb1bfda395efdae68c0f8f48f3314993. 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/QZFZ61902771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424de436eb4bfd69144cc9ae43857b5e6aabb0603ab5f04766da78fe30e08371. 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/TCAES2066119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5d4483e8f7f0664a8354e060c5122f63edcacd130f69b7552397c347b7206f. 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/TCAEE1917220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290dfb30ac032dc1d84814400e49f5096a425570a65a191e6f4f315e6e08e7c2. 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/QZNJX2081746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a216459626a3acb5c12a52425e81895ff7df7b77dd3da4c4e9203de6b4c935c. 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/PENS12006160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a6c9bbc5d8cf0ce229e98292d1e67b846149719e8182c3cab9884b363b3d37. 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/QZHZ52016094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aef7f10aafa1426eecdd4b1e4066c46c6ccf509e7548379a82cf831bcd252e4. 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/ES71G1917685.