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 0x06019edc17548804aa22ff8867b789025d1d8e66fc80dc4b75391d909cf9f32e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3f37755-75fd-43ff-8ead-ff769616e155.json and https://artists.proofprofile.net/proofs/artist/b3f37755-75fd-43ff-8ead-ff769616e155.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 0x60cdc3737cd27007b7bdf17aa34f141abd50d698677c43b99097ac22a1d76ee9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZFZ41981540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6609f08cd74c717aae21f645406f12dced77f79ef89b00dea059c906f272ff7f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ41981544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7a652ec34a32e566d47e142961940b1114b2d74c95812222e4d295253ca13c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:26:19Z), 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/GBPS83862575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3788feb18a57a816e06e39c14ee2b7455c8cb23c5d93fe504f8613f2de953bb3. 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/GBLV62025237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31c2fefa594910dee99db03daaca19a68f02e2e104d6a8ac80405044c032d7f. 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/GBLV62025238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b44f48769c2a7d772af970bf1b11af912713f86f2deb9bc17720079baddab29. 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/GBLV62025239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564fc4409f112aa18f667322061b0737ca4fcd02c98d2be6f98e4a991050f453. 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/GBLV62025240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ce39e391b23b4f3956feb3ad824a5949698c2fa6f4b4c6c10737aa7c60d158. 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/GBLV62025241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5692398fe58906849e258645e40ba46c8e49a83cdeeeb35b65fbcf7ebae220a0. 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/GBLV62025242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263e6399859d3909ac5baa84340578f93ae51ea84845a318a12c55a0d5254c43. 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/GBKQU2182845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7daceb13d811b49ea1ef74078fd9dd3b533a6b0c947fe163ce63f9943e4e8a. 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/GBKQU2182846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e86eeef6abab5129c7193c2f180b12772f698c6eeb0be9db7ca19b9ce7aa2b. 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/GBKQU2182847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4ea74dc10ecdb6244e761291724a4adef6eee90f747930677e6726558accc3. 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/GBKQU2182848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad990d8db86fb3b52c4d36be5e122e730f09f5207e9456c63d9d5ff1b18f212. 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/GBKQU2182849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90eed69679dfb0af412c43ae7a7b29d86ddd8e521997cc6d24185902ae15821f. 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/GBKQU2182850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcbbfe477a268aedb5d6ac9dd3a4f1180f11debfc5435d993fb6008fd5dd8ee. 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/GBKQU2182851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7777632824b83c84ed0f4003c28fd8adce36c2eadacf7b531246ed632bf2dc. 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/CAN112401180.
you are now listening to a tender spring (side a)
you are now listening to a tender spring
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7777632824b83c84ed0f4003c28fd8adce36c2eadacf7b531246ed632bf2dc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CAN112401180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec25c8ffda41e388362a0bc6185fda7a97a6a3106b9a5ff2558468976aa78bb0. 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/GBLV62019392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e6fcc5f7c85456d378160cbf19978fee02587e640887297375ae58ca979fb1. 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/NL4YD2200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409236555ade5ea3a4e750d7d9c47b2aea391551e37953db9103d9aabfa954f7. 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/TCAEN1970709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0a15214477fb50b3bb234d513fd1517a88f77e2815a0470aab4745555c21d5. 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/GBKQU2107949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef2b84f2d8294c4f019cc16e79f77d87f2feb91acf2e2d54abeaf8d042cc99d. 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/NL1LE2000877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6077df4145a8bdb78c30d4ba4bc1723307e1646e16138e76bfecb9995c7b4f6. 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/TCAEU2087078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff571a625559acb5f158739388e4a0192fa7631d684b71d95a7d056b2a20a619. 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/NL1LE2000966.