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 0x01adf27c9415de5d4e5ca0877783ab43972f81501a3648503b946edd0f384ed4. 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/483d4af6-a3eb-419c-b874-d1feed97b681.json and https://artists.proofprofile.net/proofs/artist/483d4af6-a3eb-419c-b874-d1feed97b681.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 0x062fad49bc7e37ecdd9542d3f54ac22655d0543728b93335b3ed0da204e3f831. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KSA012276093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bc71e39d1a2f59ce4c3eb8f5ba05448b4049baf163ec2160bfb8a9bad6c22e. 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/KSA012276094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd743531f5891e1d8932cdab2d7aa3cde905974db05ad0f8201b68548202423e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/KSA012276083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca92a45cb89e4636629f1c53840bba6d78584f2f8133f398392d9f8b2bd319b8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/KSA012276953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6531f3a549bb6dde3c812430239acc027130d69d59d97c39d839c77eab40f2. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/KSA012276946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28162a370372af50afa5bf555a5ad24b4b21145d8e7f2c015121796d7ca48344. 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/KSA012282026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4af46775d48930fbd287d0146453651488b0bcb1ecf428443943fed60ed399. 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/KSA012282319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f3d345611c3af14b5772dc36b207be489cac665b7674e0b0cbf5b1895414c3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/KSA012287720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c337ac90be364eeb969e2cd02886ea4f0fac2ca7cfd2b4980985328fbaaca83. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/KSA012287723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6d5fe26d06940bbc0657740e924612561a0b9c74d792f2b82b9be9904b4de0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KSA012288513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbd6ed96f05decc0113aad7e7093762a12d7dcb3e6f69306f263330555b185b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:51:11Z), 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/KSA012296518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc50fc516f28d0866dd82550bdae252fb447095ebb8db4863bce8decb4771fa1. 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/KSA012305351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c2e7a0ac05133abaa3338fd50f136103dfeebc4440513fb774732ff97ffedf. 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/KSA012305511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64823584c89f4bfca4bdaaf023f0cb13a83fbf45bb81b051902fd568d6abc226. 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/KSA012316483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e59e116e2c9340fc66f9ff67eec1243a0667307c3d072dc823ff80b9fabebc0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KSA012316486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c550483fd8b5f74e0e9b5e7bc1a54aab74323ee4a88b4f66caaaaf21901529a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KSA012320566.
Solace in Sound: A Meditative Serenade for Bassoon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adc05e2ea1832f0bde3271e0fa9ab0624179994259e6fe0959e7e617d131782. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KSA012324100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9ac6cfcb10aae667ee821c07c48e3b2aaf7c034e6eeb41c0f1cc6050f6a1f9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KSA012327693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be9cf76e336a041871c90d63aa547002181ceab1c9f3d00c900dad6b4e488ba. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KSA012331707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6329e0190b75bd4a7f6bff63f986e3f6a3af35f575a870c42695fa01cdf17e5. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/KSA012337785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94efb49c2ddef91ec0b10f8819a38ff9c2a3cde1c08fa3b4d1f755e6d5f76142. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KSA012337790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464f259002ec15c7c9915ffad8e73ef851886442fccd69a85e5522e8cc97ad19. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:47:20Z), 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/KSA012337794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a02c80e8b9e8265f0f7b0262f2a42376b20ad16140afd6c21fa8589a2940a6. 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/KSA012337795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6150a50f8ddf41c745eb4841b1b7f3058b66e3baf307c773403e60cf9421ef3d. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/KSA012369366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd118043bc220ed8b2d7e155448a7c7c68f8f47f4ec6e2e6f950844b2ce89b9ba. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/KSA012369926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04514f3852b43503a12db4369cfeed2112501dd6c6c9b5bb9f3d3b82219648e5. 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/KSA012379357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b10dc6173a0231d1d7d6b64be368fb496449ea65614f080a46759efeb00501c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:22Z), 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/KSA012394608.