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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eb26de3af4dc39b26e09a61629fec8144ac4ee0f8ee1d2b6a178440b1182a5. 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/cb88fcac-6bda-4895-9ece-30bfe2c9a68c.json and https://artists.proofprofile.net/proofs/artist/cb88fcac-6bda-4895-9ece-30bfe2c9a68c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3d99d6407ff1173db6c7e1bafae0dd26a8ea47fcf1db08776f20047d99b634. 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/FIUM71400621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76953aec6e78eff54118122b6af9d6a9f76d79adc1534962523bcfda8628e496. 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/FIUM71400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1891f1fb4d8bd02863e9ba90eca8f1bf570eaf1d5f4f3af7e3e62da7d6b128. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FIUM71400623.
S.T.I.K. (Sä tuoksut ihan kesälomalta) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bef69735eee4da62c546a0f4cf5fad3f7f8c94bdd81d285870b5c7b1808d59d. 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/FIUM71700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e7ab17b2bba8ec4935dcec6cd2501f5b89f11aed8bbc861bcc6e759a67102f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FIUM71700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce99710282c6927619801b1aba366270ef632aa8eb701c4304b335157e7385a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FIUM71700362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a0d8486a2b4101f7fa425e6894260ab5081727a22d60bec0e79279a5e717f3. 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/FIUM71700490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e5c4cd2c13597bd2bfa35f1d4cb8cef4e4917f1b6a83eb2d5d653aaf7ffd32. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FIUM71800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2359ce7bdaadff080b683143c6bd902a09ddbd845532620d041bbadc68ed0a3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FIUM71600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e7ab17b2bba8ec4935dcec6cd2501f5b89f11aed8bbc861bcc6e759a67102f. 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/FIUM71700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e5c4cd2c13597bd2bfa35f1d4cb8cef4e4917f1b6a83eb2d5d653aaf7ffd32. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FIUM71800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4ed7728e6a59a82746eab36da39b52f44720b5caa1322f55b8646d80c3ee43. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FIUM71800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f123e65d561ec10a20629e46a4a7088a3b6dbecd9e26dbd14233d327e69bb31. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/FIUM71800183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc234c317891d2adfd19171f040dca95717de178f4e2ae762ec36a1725847128c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FIUM71800182.
Puhu Äänellä Jonka Kuulen (Vain Elämää Kausi 8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b224f8cf7c0f0dfc4fd84dbbdf5487d726fd69ecf30794a97afb12abc6ef6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FIUM71800503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f63c0ac0f406d502b6453ee50625c7c13ff0c5349115dfaaaacd5eedbcb57db. 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/FIUM71900245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba773b3ef87a81d7e9ac361fe5f549563be232ff9b92ff321d998ec88686a133. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FIUM72000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f892941be624929244125341f705fb541ddccf414347b601c7f78fe7a3b40. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FIUM72100306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181ec39ffc5c8c2412703e73222af01712508308ffd0256a0b903148468db71d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FIN3U2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33b68d1f2a85c540c917f52976ecdbca3540925f9d66b6ebef055b10b501527. 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/FIN3U2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2075cd897ef971a1bf5d2ea90a2fcdc3e273ee41b6b978bb7202a2402b35e4d3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIN3U2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe961036c5f360a94f5d0475f13842d512578011a540f012c8285b1ff6d93bfeb. 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/FIUM71500336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2213618464df999380622207680f47c6490589aa5193e6a455ac4849f6f37f58. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FIUM72100342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63913a3e75ce27d8dc830715febdf36d660116e1154975adfb30cbf798459331. 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/FIUM71400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe961036c5f360a94f5d0475f13842d512578011a540f012c8285b1ff6d93bfeb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIUM71500336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604ba7ed12292178357d44f2e118a393409b43100044dce7adadfb4f55931d60. 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/FIWMA1500289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe961036c5f360a94f5d0475f13842d512578011a540f012c8285b1ff6d93bfeb. 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/FIUM71500336.