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 0xd6c3dc382c407737c68b9cb766fd0b7df12b52c715c62a532bf6bd38ecdfaef5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91101800-318f-47d9-a08b-1f002793a290.json and https://artists.proofprofile.net/proofs/artist/91101800-318f-47d9-a08b-1f002793a290.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pet’s Day Out: Chill Music for Companions
Relaxation Fireside: Calming Music for Serene Evenings
Binaural Harmony: Birds Relaxation Melodies - 80 88 Hz
Rainy Night Slumber: Soothing Sleep Soundscapes
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 0x3a96476e4fcf8d9ad0c9a167ff6e155e64abdad4d32c85d49ef81ceb949d60fc. 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/SE5W32100606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5143c39de8adcf99f6a3010b6517f0d75ddaa1868f2c14de5cc53a01b1e5730. 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/SE5W32100607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1099cfaf989ef38bbe75344fd12fcdc67d05cc00fc579f34f58e2c4e3d95d25. 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/SE5W32100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833da3c8e77b0bf04be303aca8262f104f69b7db69b5b8b29065ea6c5f6abe68. 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/SE5W32100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42728d39228f75d112b06a48a8d056d527317cee24691168457adca31bac15d. 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/SE5W32100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7113cfaadf7597f54e51d82487af8cb45c846f3b16ce42e4136f38315124e7ac. 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/SE5W32100611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fce93c876f53c41a077e7063f1e266f5dbbd5e4a093870c9d44c707ac9592fd. 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/SE5W32100612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2de48cee0d041d06fa785f8c7fe1f9e362b076ec60c43f693948813c4fbe27. 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/SE5W32100613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294380436b2c2c3b8e6f55551eabfb9c9f56a3d9b4a2a93cf05d9cef8d5d745c. 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/SE5W32203340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1587750a6858c7ceeade0a63fd1c3e24149743353933e2bc9ab8ac68d1cdf46. 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/SE5W32203341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8ddf10938e52431956271af2872dddb67f04a3567b7a151395a7ad0a6a5331. 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/SE5W32203343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed96cfebb856400b4431366ff15de034962420bc172262018973ad724264aa1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE5W32203342.
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 0xe1e66debd1d51742f631c1913af7d104f28eedb50249c00313b532b54e7936bf. 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/SE5W32202640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88d3eaa2a25fa5d84d3846f24918617afc6ba9de78e63a35935fdf9f3846745. 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/SE5W32202641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaf47a5d2accd60d7db5cfe35903a2c9b6ecf5073d80a6d47d20811cee55ea6. 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/SE5W32202642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5084add2c820e800cc17caadf79d221f4015e7e6c182289141da8a59567facf. 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/SE5W32202643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fea1c9684546f74893ecb1b21ccf6d1449730792c26847cc589013c62e54749. 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/SE5W32201225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5456f5d3ceb49bc53473bf29d9eb1edae96247a550f19bbca1245cadeab85e5. 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/SE5W32201227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ab36228077cc916fbb2bbaaf69b8b225dfc49026ba26947accae1fec592083. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/SE5W32201226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481fe339452ab9fef8991c38b8f61697c3adb456cac158d311f49cf4aa298ed3. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/SE5W32201228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27b714b1813d058684ad2fe83a6477a6d154f6784c0abeed976bced40c85531. 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/SE5W32200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f638a3ca2507fca9f834b21b43dc5baa805bcabee600eb1d55374b0cf29545a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE5W32200643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff77585df0c9d195d44dc3348f18ef1e392a7eb25498b06ffc520d4d5d32a74. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE5W32200644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecdeabca699f2b470fa221d9d7d803486c3deb6fe58d48f527501f021e974ac. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE5W32200645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8bf15fe105a731139958042e7f6ea356ee0b2542e01206ed25841528683ee6. 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/SE5W32200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacab496f753f75d0d09f8676dd6855d501e94001919a12ea53681719db605f3. 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/SE5W32200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54804268195bf9f84b3d11fe2ebf8f02fb456c7bfaebc5b0bcb26a843aac0e7. 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/SE5W32200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e622a9cfc4229f1120004e25461dc6203821ddabb957d47279f81b92bdc91b1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SE5W32200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374aa3e08dae2f89ff7078783be0dbfdb52440f0db3c55e9aaf3c900f145977f. 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/SE5W32104223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b6e74012006030f7c1fb090daff0f8d9ee01ed6be207132ad0bfc5a74b8cd. 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/SE5W32104224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b962cc725a6f4230437b06b954bb8424882dfcb664cbe0e68ad1ad6b1f2b469. 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/SE5W32104225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6f3a13aa59bbb0e96a3a00147a3c0812a610f2f501e2ba63e95cd85273b825. 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/SE5W32104226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0239fb893c1ce8075f6fc2d4675206c144a1c93497cb80d5d62c73610f75d5. 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/SE5W32101789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57761ad6b5b5a3a0b523da3e04005ceb1e4dec472db1652c4a7c3e6b670776e. 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/SE5W32101790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33f605d9399f33dbb64a1787deac398dc425a3f770dbb514bf8bca6ccca1e72. 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/SE5W32101791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c43ae3aca954da887b0ee501fa7fb68c8fc8f42579b1b1c1b22b2a779b9df. 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/SE5W32101792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb489c3b9cbe625596f54d1a6fb10627f5be09e9f70d639bf9bb4f89972867de3. 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/SE5W32097801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe042c8179fe60ae4807b93d4edae45d0b1b1f6ef58eaa29d2eefb2d0e22b1d6d. 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/SE5W32097802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff775dc3cbe7fec4f17f0198b136f9ecc7efad735c6c0ab0a4385b8ebfe5478a. 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/SE5W32097803.