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 0xf4e7e6ab05f126c2b6d7fae3a20bf3db1e3e6650df8a4604408dd42db9964afb. 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/9414f277-ed94-4b87-bd9f-5b23f8a079f5.json and https://artists.proofprofile.net/proofs/artist/9414f277-ed94-4b87-bd9f-5b23f8a079f5.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 0xf968023358de6a7b3eafbdf775b7f3fc6ef56d37efa3df22f483362bacd988c9. 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/QZYFZ2474896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f6358f9141b35f2ad93ca895a67ff26275e5795aac30ac0d469822d62e647e. 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/QZYFZ2474906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a9f0dbdbf74d18c41571469b8496688d4596cf90e31f8ad5ee859f191bb379. 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/QZNJX2471714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7e229cd6cfd3ca2f16f81729b5b503e51abf50bdbe3da652f7e648c668c08. 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/QZNJX2471718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771125c0a1f81dbfd7dcf06895f8a02fcf5f1843f988b4e42fc804b6cbdd8446. 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/QZNJX2471723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b7a9acc1f69e557599fceabd2bae28ad52e305211db9afbeaa347c1650019f. 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/QZNW72256300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc189b932d9b83511eeadbc08659ba1352f313d76290bc5d722f085c73d680c20. 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/QZNW72256303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb67755ee00ce0e09f10e8415ec0ad19b3f30c745ae49f008fbd4facf3c59585. 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/QZHZ32281061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe530b42887989cf789c72b4d232f835d197a9d021a1da51412ee7a068178252b. 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/QZHZ32281068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c190a75eb54129d557d8ab57d9d2b76951c6d525bbaffe6d000ab7981c9736. 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/QZZ972442198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab327f13b76cc6c40f46109da4e8abad9e20d637be3dcacbe67be8ca57cba1c6. 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/QZW9K2395339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3de909e15cda2a2be2407efea51490a3ab535fe1490352658f0ffda2347fd5c. 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/QZW9L2319632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ff4676caaf211213bec5a9841291a5c9ad175ac1de6b715f3db02557b153d5. 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/QZTPX2383954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2938d8e603dffc2e3958fb7a8cf4ece784323e827b11bf05ed98a7d70f699c. 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/QZW9N2248143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7189cfaa3554c2f91ab7478a0f8178bd168ae01a0cfab13ed58f7eebbf5e5f7. 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/QZNW72255041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d2281c8fda8ebc4f3a62212d992895b2cdcd57472ca800c777a2890eb51243. 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/QZTVM2263319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95113155faae2baa40f8f4b12926ad370e4b78e16ee1c11553b86d3ff6c6d2eb. 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/ESA012268177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fdf04e2190b12c225e266b38e36fe54f5098d42c960fb9fd42c95e03db7488. 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/QZHZ42205708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7406f383b48792b93abf604bc21d4065a7a4bbd9bba970aede0d2ffee6b93d. 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/QZHZ32264068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734997c20055ecba94721479ac9875d50835c8695ba3584ef92cc2f83f6d86b6. 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/QZHZ32280466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f1fc9b0a7168e07914656e04209894565a78892fea9eb024996bb4fd817260. 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/QZHZ32264122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0567d7eb3a12fcfa3a966cf2e0dba8455291f444914d968a96f2d47d2e516065. 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/USHM21781990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70e2c5bfcc91cf1a36881b4c175edcf09a4bae60da73c95086c0e93481035f5. 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/QZNW72256305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cd26df45fa39c622672bbb451654372217a477a57e4b8163f8d27f75e69a38. 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/ESA011584245.
Pá Bailar con las Guachas (Cumbias y Zapateados)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc189b932d9b83511eeadbc08659ba1352f313d76290bc5d722f085c73d680c20. 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/QZNW72256303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe8ccc73bc179ae9617af0a25a7d598915c4e365fe1d0674f1867908dfc0280. 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/QZWDW2476401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa524f2b6164a1d4dbe87f85f64bb44ccfe25b0258910e44607672824c7eb7bbc. 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/QZNW72412474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe2ea27ab14d126a74e6a40cadc4613e8703ccfbd680c75409f6570d80e8aff. 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/QZZ972302201.